64406840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{51941}}^1$

素因数の和:51983

約数の個数: 32

約数和(自身を含む): 149592960

約数和(自身を除く): 85186120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 51941, 103882, 207764, 259705, 415528, 519410, 1038820, 1610171, 2077640, 3220342, 6440684, 8050855, 12881368, 16101710, 32203420, 64406840]

約数ペア:

[(1, 64406840), (2, 32203420), (4, 16101710), (5, 12881368), (8, 8050855), (10, 6440684), (20, 3220342), (31, 2077640), (40, 1610171), (62, 1038820), (124, 519410), (155, 415528), (248, 259705), (310, 207764), (620, 103882), (1240, 51941)]