20287800

素因数分解:

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

素因数の和:72

約数の個数: 288

約数和(自身を含む): 79942800

約数和(自身を除く): 59655000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 17, 18, 20, 24, 25, 26, 27, 30, 34, 36, 39, 40, 45, 50, 51, 52, 54, 60, 65, 68, 72, 75, 78, 85, 90, 100, 102, 104, 108, 117, 120, 130, 135, 136, 150, 153, 156, 170, 180, 195, 200, 204, 216, 221, 225, 234, 255, 260, 270, 289, 300, 306, 312, 325, 340, 351, 360, 390, 408, 425, 442, 450, 459, 468, 510, 520, 540, 578, 585, 600, 612, 650, 663, 675, 680, 702, 765, 780, 850, 867, 884, 900, 918, 936, 975, 1020, 1080, 1105, 1156, 1170, 1224, 1275, 1300, 1326, 1350, 1404, 1445, 1530, 1560, 1700, 1734, 1755, 1768, 1800, 1836, 1950, 1989, 2040, 2210, 2295, 2312, 2340, 2550, 2600, 2601, 2652, 2700, 2808, 2890, 2925, 3060, 3315, 3400, 3468, 3510, 3672, 3757, 3825, 3900, 3978, 4335, 4420, 4590, 4680, 5100, 5202, 5304, 5400, 5525, 5780, 5850, 5967, 6120, 6630, 6936, 7020, 7225, 7514, 7650, 7800, 7803, 7956, 8670, 8775, 8840, 9180, 9945, 10200, 10404, 11050, 11271, 11475, 11560, 11700, 11934, 13005, 13260, 14040, 14450, 15028, 15300, 15606, 15912, 16575, 17340, 17550, 18360, 18785, 19890, 20808, 21675, 22100, 22542, 22950, 23400, 23868, 26010, 26520, 28900, 29835, 30056, 30600, 31212, 33150, 33813, 34680, 35100, 37570, 39015, 39780, 43350, 44200, 45084, 45900, 47736, 49725, 52020, 56355, 57800, 59670, 62424, 65025, 66300, 67626, 70200, 75140, 78030, 79560, 86700, 90168, 91800, 93925, 99450, 101439, 104040, 112710, 119340, 130050, 132600, 135252, 149175, 150280, 156060, 169065, 173400, 187850, 195075, 198900, 202878, 225420, 238680, 260100, 270504, 281775, 298350, 312120, 338130, 375700, 390150, 397800, 405756, 450840, 507195, 520200, 563550, 596700, 676260, 751400, 780300, 811512, 845325, 1014390, 1127100, 1193400, 1352520, 1560600, 1690650, 2028780, 2254200, 2535975, 3381300, 4057560, 5071950, 6762600, 10143900, 20287800]

約数ペア:

[(1, 20287800), (2, 10143900), (3, 6762600), (4, 5071950), (5, 4057560), (6, 3381300), (8, 2535975), (9, 2254200), (10, 2028780), (12, 1690650), (13, 1560600), (15, 1352520), (17, 1193400), (18, 1127100), (20, 1014390), (24, 845325), (25, 811512), (26, 780300), (27, 751400), (30, 676260), (34, 596700), (36, 563550), (39, 520200), (40, 507195), (45, 450840), (50, 405756), (51, 397800), (52, 390150), (54, 375700), (60, 338130), (65, 312120), (68, 298350), (72, 281775), (75, 270504), (78, 260100), (85, 238680), (90, 225420), (100, 202878), (102, 198900), (104, 195075), (108, 187850), (117, 173400), (120, 169065), (130, 156060), (135, 150280), (136, 149175), (150, 135252), (153, 132600), (156, 130050), (170, 119340), (180, 112710), (195, 104040), (200, 101439), (204, 99450), (216, 93925), (221, 91800), (225, 90168), (234, 86700), (255, 79560), (260, 78030), (270, 75140), (289, 70200), (300, 67626), (306, 66300), (312, 65025), (325, 62424), (340, 59670), (351, 57800), (360, 56355), (390, 52020), (408, 49725), (425, 47736), (442, 45900), (450, 45084), (459, 44200), (468, 43350), (510, 39780), (520, 39015), (540, 37570), (578, 35100), (585, 34680), (600, 33813), (612, 33150), (650, 31212), (663, 30600), (675, 30056), (680, 29835), (702, 28900), (765, 26520), (780, 26010), (850, 23868), (867, 23400), (884, 22950), (900, 22542), (918, 22100), (936, 21675), (975, 20808), (1020, 19890), (1080, 18785), (1105, 18360), (1156, 17550), (1170, 17340), (1224, 16575), (1275, 15912), (1300, 15606), (1326, 15300), (1350, 15028), (1404, 14450), (1445, 14040), (1530, 13260), (1560, 13005), (1700, 11934), (1734, 11700), (1755, 11560), (1768, 11475), (1800, 11271), (1836, 11050), (1950, 10404), (1989, 10200), (2040, 9945), (2210, 9180), (2295, 8840), (2312, 8775), (2340, 8670), (2550, 7956), (2600, 7803), (2601, 7800), (2652, 7650), (2700, 7514), (2808, 7225), (2890, 7020), (2925, 6936), (3060, 6630), (3315, 6120), (3400, 5967), (3468, 5850), (3510, 5780), (3672, 5525), (3757, 5400), (3825, 5304), (3900, 5202), (3978, 5100), (4335, 4680), (4420, 4590)]