21387600

素因数分解:

$2^4\times 3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{457}}^1$

素因数の和:494

約数の個数: 180

約数和(自身を含む): 80105116

約数和(自身を除く): 58717516

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 25, 26, 30, 36, 39, 40, 45, 48, 50, 52, 60, 65, 72, 75, 78, 80, 90, 100, 104, 117, 120, 130, 144, 150, 156, 180, 195, 200, 208, 225, 234, 240, 260, 300, 312, 325, 360, 390, 400, 450, 457, 468, 520, 585, 600, 624, 650, 720, 780, 900, 914, 936, 975, 1040, 1170, 1200, 1300, 1371, 1560, 1800, 1828, 1872, 1950, 2285, 2340, 2600, 2742, 2925, 3120, 3600, 3656, 3900, 4113, 4570, 4680, 5200, 5484, 5850, 5941, 6855, 7312, 7800, 8226, 9140, 9360, 10968, 11425, 11700, 11882, 13710, 15600, 16452, 17823, 18280, 20565, 21936, 22850, 23400, 23764, 27420, 29705, 32904, 34275, 35646, 36560, 41130, 45700, 46800, 47528, 53469, 54840, 59410, 65808, 68550, 71292, 82260, 89115, 91400, 95056, 102825, 106938, 109680, 118820, 137100, 142584, 148525, 164520, 178230, 182800, 205650, 213876, 237640, 267345, 274200, 285168, 297050, 329040, 356460, 411300, 427752, 445575, 475280, 534690, 548400, 594100, 712920, 822600, 855504, 891150, 1069380, 1188200, 1336725, 1425840, 1645200, 1782300, 2138760, 2376400, 2673450, 3564600, 4277520, 5346900, 7129200, 10693800, 21387600]

約数ペア:

[(1, 21387600), (2, 10693800), (3, 7129200), (4, 5346900), (5, 4277520), (6, 3564600), (8, 2673450), (9, 2376400), (10, 2138760), (12, 1782300), (13, 1645200), (15, 1425840), (16, 1336725), (18, 1188200), (20, 1069380), (24, 891150), (25, 855504), (26, 822600), (30, 712920), (36, 594100), (39, 548400), (40, 534690), (45, 475280), (48, 445575), (50, 427752), (52, 411300), (60, 356460), (65, 329040), (72, 297050), (75, 285168), (78, 274200), (80, 267345), (90, 237640), (100, 213876), (104, 205650), (117, 182800), (120, 178230), (130, 164520), (144, 148525), (150, 142584), (156, 137100), (180, 118820), (195, 109680), (200, 106938), (208, 102825), (225, 95056), (234, 91400), (240, 89115), (260, 82260), (300, 71292), (312, 68550), (325, 65808), (360, 59410), (390, 54840), (400, 53469), (450, 47528), (457, 46800), (468, 45700), (520, 41130), (585, 36560), (600, 35646), (624, 34275), (650, 32904), (720, 29705), (780, 27420), (900, 23764), (914, 23400), (936, 22850), (975, 21936), (1040, 20565), (1170, 18280), (1200, 17823), (1300, 16452), (1371, 15600), (1560, 13710), (1800, 11882), (1828, 11700), (1872, 11425), (1950, 10968), (2285, 9360), (2340, 9140), (2600, 8226), (2742, 7800), (2925, 7312), (3120, 6855), (3600, 5941), (3656, 5850), (3900, 5484), (4113, 5200), (4570, 4680)]