408260

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:295

約数の個数: 24

約数和(自身を含む): 869400

約数和(自身を除く): 461140

約数列:

[1, 2, 4, 5, 10, 20, 137, 149, 274, 298, 548, 596, 685, 745, 1370, 1490, 2740, 2980, 20413, 40826, 81652, 102065, 204130, 408260]

約数ペア:

[(1, 408260), (2, 204130), (4, 102065), (5, 81652), (10, 40826), (20, 20413), (137, 2980), (149, 2740), (274, 1490), (298, 1370), (548, 745), (596, 685)]