646674860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2487211}}^1$

素因数の和:2487233

約数の個数: 24

約数和(自身を含む): 1462480656

約数和(自身を除く): 815805796

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2487211, 4974422, 9948844, 12436055, 24872110, 32333743, 49744220, 64667486, 129334972, 161668715, 323337430, 646674860]

約数ペア:

[(1, 646674860), (2, 323337430), (4, 161668715), (5, 129334972), (10, 64667486), (13, 49744220), (20, 32333743), (26, 24872110), (52, 12436055), (65, 9948844), (130, 4974422), (260, 2487211)]