640909684

素因数分解:

$2^2\times {\mathrm{59}}^1\times {\mathrm{257}}^1\times {\mathrm{10567}}^1$

素因数の和:10887

約数の個数: 24

約数和(自身を含む): 1145148480

約数和(自身を除く): 504238796

約数列:

[1, 2, 4, 59, 118, 236, 257, 514, 1028, 10567, 15163, 21134, 30326, 42268, 60652, 623453, 1246906, 2493812, 2715719, 5431438, 10862876, 160227421, 320454842, 640909684]

約数ペア:

[(1, 640909684), (2, 320454842), (4, 160227421), (59, 10862876), (118, 5431438), (236, 2715719), (257, 2493812), (514, 1246906), (1028, 623453), (10567, 60652), (15163, 42268), (21134, 30326)]