256319739

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{15991}}^1$

素因数の和:16147

約数の個数: 24

約数和(自身を含む): 401655072

約数和(自身を除く): 145335333

約数列:

[1, 3, 9, 13, 39, 117, 137, 411, 1233, 1781, 5343, 15991, 16029, 47973, 143919, 207883, 623649, 1870947, 2190767, 6572301, 19716903, 28479971, 85439913, 256319739]

約数ペア:

[(1, 256319739), (3, 85439913), (9, 28479971), (13, 19716903), (39, 6572301), (117, 2190767), (137, 1870947), (411, 623649), (1233, 207883), (1781, 143919), (5343, 47973), (15991, 16029)]