640612

素因数分解:

$2^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{167}}^1$

素因数の和:315

約数の個数: 24

約数和(自身を含む): 1298304

約数和(自身を除く): 657692

約数列:

[1, 2, 4, 7, 14, 28, 137, 167, 274, 334, 548, 668, 959, 1169, 1918, 2338, 3836, 4676, 22879, 45758, 91516, 160153, 320306, 640612]

約数ペア:

[(1, 640612), (2, 320306), (4, 160153), (7, 91516), (14, 45758), (28, 22879), (137, 4676), (167, 3836), (274, 2338), (334, 1918), (548, 1169), (668, 959)]