19890000

素因数分解:

$2^4\times 3^2\times 5^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1$

素因数の和:64

約数の個数: 300

約数和(自身を含む): 79315236

約数和(自身を除く): 59425236

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 17, 18, 20, 24, 25, 26, 30, 34, 36, 39, 40, 45, 48, 50, 51, 52, 60, 65, 68, 72, 75, 78, 80, 85, 90, 100, 102, 104, 117, 120, 125, 130, 136, 144, 150, 153, 156, 170, 180, 195, 200, 204, 208, 221, 225, 234, 240, 250, 255, 260, 272, 300, 306, 312, 325, 340, 360, 375, 390, 400, 408, 425, 442, 450, 468, 500, 510, 520, 585, 600, 612, 624, 625, 650, 663, 680, 720, 750, 765, 780, 816, 850, 884, 900, 936, 975, 1000, 1020, 1040, 1105, 1125, 1170, 1200, 1224, 1250, 1275, 1300, 1326, 1360, 1500, 1530, 1560, 1625, 1700, 1768, 1800, 1872, 1875, 1950, 1989, 2000, 2040, 2125, 2210, 2250, 2340, 2448, 2500, 2550, 2600, 2652, 2925, 3000, 3060, 3120, 3250, 3315, 3400, 3536, 3600, 3750, 3825, 3900, 3978, 4080, 4250, 4420, 4500, 4680, 4875, 5000, 5100, 5200, 5304, 5525, 5625, 5850, 6000, 6120, 6375, 6500, 6630, 6800, 7500, 7650, 7800, 7956, 8125, 8500, 8840, 9000, 9360, 9750, 9945, 10000, 10200, 10608, 10625, 11050, 11250, 11700, 12240, 12750, 13000, 13260, 14625, 15000, 15300, 15600, 15912, 16250, 16575, 17000, 17680, 18000, 19125, 19500, 19890, 20400, 21250, 22100, 22500, 23400, 24375, 25500, 26000, 26520, 27625, 29250, 30000, 30600, 31824, 31875, 32500, 33150, 34000, 38250, 39000, 39780, 42500, 44200, 45000, 46800, 48750, 49725, 51000, 53040, 55250, 58500, 61200, 63750, 65000, 66300, 73125, 76500, 78000, 79560, 82875, 85000, 88400, 90000, 95625, 97500, 99450, 102000, 110500, 117000, 127500, 130000, 132600, 138125, 146250, 153000, 159120, 165750, 170000, 191250, 195000, 198900, 221000, 234000, 248625, 255000, 265200, 276250, 292500, 306000, 331500, 382500, 390000, 397800, 414375, 442000, 497250, 510000, 552500, 585000, 663000, 765000, 795600, 828750, 994500, 1105000, 1170000, 1243125, 1326000, 1530000, 1657500, 1989000, 2210000, 2486250, 3315000, 3978000, 4972500, 6630000, 9945000, 19890000]

約数ペア:

[(1, 19890000), (2, 9945000), (3, 6630000), (4, 4972500), (5, 3978000), (6, 3315000), (8, 2486250), (9, 2210000), (10, 1989000), (12, 1657500), (13, 1530000), (15, 1326000), (16, 1243125), (17, 1170000), (18, 1105000), (20, 994500), (24, 828750), (25, 795600), (26, 765000), (30, 663000), (34, 585000), (36, 552500), (39, 510000), (40, 497250), (45, 442000), (48, 414375), (50, 397800), (51, 390000), (52, 382500), (60, 331500), (65, 306000), (68, 292500), (72, 276250), (75, 265200), (78, 255000), (80, 248625), (85, 234000), (90, 221000), (100, 198900), (102, 195000), (104, 191250), (117, 170000), (120, 165750), (125, 159120), (130, 153000), (136, 146250), (144, 138125), (150, 132600), (153, 130000), (156, 127500), (170, 117000), (180, 110500), (195, 102000), (200, 99450), (204, 97500), (208, 95625), (221, 90000), (225, 88400), (234, 85000), (240, 82875), (250, 79560), (255, 78000), (260, 76500), (272, 73125), (300, 66300), (306, 65000), (312, 63750), (325, 61200), (340, 58500), (360, 55250), (375, 53040), (390, 51000), (400, 49725), (408, 48750), (425, 46800), (442, 45000), (450, 44200), (468, 42500), (500, 39780), (510, 39000), (520, 38250), (585, 34000), (600, 33150), (612, 32500), (624, 31875), (625, 31824), (650, 30600), (663, 30000), (680, 29250), (720, 27625), (750, 26520), (765, 26000), (780, 25500), (816, 24375), (850, 23400), (884, 22500), (900, 22100), (936, 21250), (975, 20400), (1000, 19890), (1020, 19500), (1040, 19125), (1105, 18000), (1125, 17680), (1170, 17000), (1200, 16575), (1224, 16250), (1250, 15912), (1275, 15600), (1300, 15300), (1326, 15000), (1360, 14625), (1500, 13260), (1530, 13000), (1560, 12750), (1625, 12240), (1700, 11700), (1768, 11250), (1800, 11050), (1872, 10625), (1875, 10608), (1950, 10200), (1989, 10000), (2000, 9945), (2040, 9750), (2125, 9360), (2210, 9000), (2250, 8840), (2340, 8500), (2448, 8125), (2500, 7956), (2550, 7800), (2600, 7650), (2652, 7500), (2925, 6800), (3000, 6630), (3060, 6500), (3120, 6375), (3250, 6120), (3315, 6000), (3400, 5850), (3536, 5625), (3600, 5525), (3750, 5304), (3825, 5200), (3900, 5100), (3978, 5000), (4080, 4875), (4250, 4680), (4420, 4500)]