680171908

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{31981}}^1$

素因数の和:32407

約数の個数: 24

約数和(自身を含む): 1285036760

約数和(自身を除く): 604864852

約数列:

[1, 2, 4, 13, 26, 52, 409, 818, 1636, 5317, 10634, 21268, 31981, 63962, 127924, 415753, 831506, 1663012, 13080229, 26160458, 52320916, 170042977, 340085954, 680171908]

約数ペア:

[(1, 680171908), (2, 340085954), (4, 170042977), (13, 52320916), (26, 26160458), (52, 13080229), (409, 1663012), (818, 831506), (1636, 415753), (5317, 127924), (10634, 63962), (21268, 31981)]