642736

素因数分解:

$2^4\times {\mathrm{17}}^2\times {\mathrm{139}}^1$

素因数の和:181

約数の個数: 30

約数和(自身を含む): 1332380

約数和(自身を除く): 689644

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 139, 272, 278, 289, 556, 578, 1112, 1156, 2224, 2312, 2363, 4624, 4726, 9452, 18904, 37808, 40171, 80342, 160684, 321368, 642736]

約数ペア:

[(1, 642736), (2, 321368), (4, 160684), (8, 80342), (16, 40171), (17, 37808), (34, 18904), (68, 9452), (136, 4726), (139, 4624), (272, 2363), (278, 2312), (289, 2224), (556, 1156), (578, 1112)]