21017156919

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1\times {\mathrm{49459}}^1$

素因数の和:49715

約数の個数: 32

約数和(自身を含む): 31147929600

約数和(自身を除く): 10130772681

約数列:

[1, 3, 11, 33, 79, 163, 237, 489, 869, 1793, 2607, 5379, 12877, 38631, 49459, 141647, 148377, 424941, 544049, 1632147, 3907261, 8061817, 11721783, 24185451, 42979871, 88679987, 128939613, 266039961, 636883543, 1910650629, 7005718973, 21017156919]

約数ペア:

[(1, 21017156919), (3, 7005718973), (11, 1910650629), (33, 636883543), (79, 266039961), (163, 128939613), (237, 88679987), (489, 42979871), (869, 24185451), (1793, 11721783), (2607, 8061817), (5379, 3907261), (12877, 1632147), (38631, 544049), (49459, 424941), (141647, 148377)]