64468840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{51991}}^1$

素因数の和:52033

約数の個数: 32

約数和(自身を含む): 149736960

約数和(自身を除く): 85268120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 51991, 103982, 207964, 259955, 415928, 519910, 1039820, 1611721, 2079640, 3223442, 6446884, 8058605, 12893768, 16117210, 32234420, 64468840]

約数ペア:

[(1, 64468840), (2, 32234420), (4, 16117210), (5, 12893768), (8, 8058605), (10, 6446884), (20, 3223442), (31, 2079640), (40, 1611721), (62, 1039820), (124, 519910), (155, 415928), (248, 259955), (310, 207964), (620, 103982), (1240, 51991)]