321435280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1\times {\mathrm{113}}^1$

素因数の和:225

約数の個数: 120

約数和(自身を含む): 800111736

約数和(自身を除く): 478676456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 37, 40, 62, 74, 80, 113, 124, 148, 155, 185, 226, 248, 296, 310, 370, 452, 496, 565, 592, 620, 740, 904, 961, 1130, 1147, 1240, 1480, 1808, 1922, 2260, 2294, 2480, 2960, 3503, 3844, 4181, 4520, 4588, 4805, 5735, 7006, 7688, 8362, 9040, 9176, 9610, 11470, 14012, 15376, 16724, 17515, 18352, 19220, 20905, 22940, 28024, 33448, 35030, 35557, 38440, 41810, 45880, 56048, 66896, 70060, 71114, 76880, 83620, 91760, 108593, 129611, 140120, 142228, 167240, 177785, 217186, 259222, 280240, 284456, 334480, 355570, 434372, 518444, 542965, 568912, 648055, 711140, 868744, 1036888, 1085930, 1296110, 1422280, 1737488, 2073776, 2171860, 2592220, 2844560, 4017941, 4343720, 5184440, 8035882, 8687440, 10368880, 16071764, 20089705, 32143528, 40179410, 64287056, 80358820, 160717640, 321435280]

約数ペア:

[(1, 321435280), (2, 160717640), (4, 80358820), (5, 64287056), (8, 40179410), (10, 32143528), (16, 20089705), (20, 16071764), (31, 10368880), (37, 8687440), (40, 8035882), (62, 5184440), (74, 4343720), (80, 4017941), (113, 2844560), (124, 2592220), (148, 2171860), (155, 2073776), (185, 1737488), (226, 1422280), (248, 1296110), (296, 1085930), (310, 1036888), (370, 868744), (452, 711140), (496, 648055), (565, 568912), (592, 542965), (620, 518444), (740, 434372), (904, 355570), (961, 334480), (1130, 284456), (1147, 280240), (1240, 259222), (1480, 217186), (1808, 177785), (1922, 167240), (2260, 142228), (2294, 140120), (2480, 129611), (2960, 108593), (3503, 91760), (3844, 83620), (4181, 76880), (4520, 71114), (4588, 70060), (4805, 66896), (5735, 56048), (7006, 45880), (7688, 41810), (8362, 38440), (9040, 35557), (9176, 35030), (9610, 33448), (11470, 28024), (14012, 22940), (15376, 20905), (16724, 19220), (17515, 18352)]