407640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:136

約数の個数: 64

約数和(自身を含む): 1267200

約数和(自身を除く): 859560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 79, 86, 120, 129, 158, 172, 215, 237, 258, 316, 344, 395, 430, 474, 516, 632, 645, 790, 860, 948, 1032, 1185, 1290, 1580, 1720, 1896, 2370, 2580, 3160, 3397, 4740, 5160, 6794, 9480, 10191, 13588, 16985, 20382, 27176, 33970, 40764, 50955, 67940, 81528, 101910, 135880, 203820, 407640]

約数ペア:

[(1, 407640), (2, 203820), (3, 135880), (4, 101910), (5, 81528), (6, 67940), (8, 50955), (10, 40764), (12, 33970), (15, 27176), (20, 20382), (24, 16985), (30, 13588), (40, 10191), (43, 9480), (60, 6794), (79, 5160), (86, 4740), (120, 3397), (129, 3160), (158, 2580), (172, 2370), (215, 1896), (237, 1720), (258, 1580), (316, 1290), (344, 1185), (395, 1032), (430, 948), (474, 860), (516, 790), (632, 645)]