640484

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:239

約数の個数: 24

約数和(自身を含む): 1228920

約数和(自身を除く): 588436

約数列:

[1, 2, 4, 13, 26, 52, 109, 113, 218, 226, 436, 452, 1417, 1469, 2834, 2938, 5668, 5876, 12317, 24634, 49268, 160121, 320242, 640484]

約数ペア:

[(1, 640484), (2, 320242), (4, 160121), (13, 49268), (26, 24634), (52, 12317), (109, 5876), (113, 5668), (218, 2938), (226, 2834), (436, 1469), (452, 1417)]