1515202020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{1999}}^1\times {\mathrm{4211}}^1$

素因数の和:6225

約数の個数: 72

約数和(自身を含む): 4599504000

約数和(自身を除く): 3084301980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 1999, 3998, 4211, 5997, 7996, 8422, 9995, 11994, 12633, 16844, 17991, 19990, 21055, 23988, 25266, 29985, 35982, 37899, 39980, 42110, 50532, 59970, 63165, 71964, 75798, 84220, 89955, 119940, 126330, 151596, 179910, 189495, 252660, 359820, 378990, 757980, 8417789, 16835578, 25253367, 33671156, 42088945, 50506734, 75760101, 84177890, 101013468, 126266835, 151520202, 168355780, 252533670, 303040404, 378800505, 505067340, 757601010, 1515202020]

約数ペア:

[(1, 1515202020), (2, 757601010), (3, 505067340), (4, 378800505), (5, 303040404), (6, 252533670), (9, 168355780), (10, 151520202), (12, 126266835), (15, 101013468), (18, 84177890), (20, 75760101), (30, 50506734), (36, 42088945), (45, 33671156), (60, 25253367), (90, 16835578), (180, 8417789), (1999, 757980), (3998, 378990), (4211, 359820), (5997, 252660), (7996, 189495), (8422, 179910), (9995, 151596), (11994, 126330), (12633, 119940), (16844, 89955), (17991, 84220), (19990, 75798), (21055, 71964), (23988, 63165), (25266, 59970), (29985, 50532), (35982, 42110), (37899, 39980)]