64341740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{661}}^1$

素因数の和:858

約数の個数: 48

約数和(自身を含む): 140577024

約数和(自身を除く): 76235284

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 157, 310, 314, 620, 628, 661, 785, 1322, 1570, 2644, 3140, 3305, 4867, 6610, 9734, 13220, 19468, 20491, 24335, 40982, 48670, 81964, 97340, 102455, 103777, 204910, 207554, 409820, 415108, 518885, 1037770, 2075540, 3217087, 6434174, 12868348, 16085435, 32170870, 64341740]

約数ペア:

[(1, 64341740), (2, 32170870), (4, 16085435), (5, 12868348), (10, 6434174), (20, 3217087), (31, 2075540), (62, 1037770), (124, 518885), (155, 415108), (157, 409820), (310, 207554), (314, 204910), (620, 103777), (628, 102455), (661, 97340), (785, 81964), (1322, 48670), (1570, 40982), (2644, 24335), (3140, 20491), (3305, 19468), (4867, 13220), (6610, 9734)]