640459852

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{179}}^1\times {\mathrm{21817}}^1$

素因数の和:22041

約数の個数: 24

約数和(自身を含む): 1154608560

約数和(自身を除く): 514148708

約数列:

[1, 2, 4, 41, 82, 164, 179, 358, 716, 7339, 14678, 21817, 29356, 43634, 87268, 894497, 1788994, 3577988, 3905243, 7810486, 15620972, 160114963, 320229926, 640459852]

約数ペア:

[(1, 640459852), (2, 320229926), (4, 160114963), (41, 15620972), (82, 7810486), (164, 3905243), (179, 3577988), (358, 1788994), (716, 894497), (7339, 87268), (14678, 43634), (21817, 29356)]