640886398

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{37}}^2\times {\mathrm{10177}}^1$

素因数の和:10276

約数の個数: 24

約数和(自身を含む): 1031072112

約数和(自身を除く): 390185714

約数列:

[1, 2, 23, 37, 46, 74, 851, 1369, 1702, 2738, 10177, 20354, 31487, 62974, 234071, 376549, 468142, 753098, 8660627, 13932313, 17321254, 27864626, 320443199, 640886398]

約数ペア:

[(1, 640886398), (2, 320443199), (23, 27864626), (37, 17321254), (46, 13932313), (74, 8660627), (851, 753098), (1369, 468142), (1702, 376549), (2738, 234071), (10177, 62974), (20354, 31487)]