21291790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{7121}}^1$

素因数の和:7164

約数の個数: 32

約数和(自身を含む): 43073856

約数和(自身を除く): 21782066

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 130, 230, 299, 598, 1495, 2990, 7121, 14242, 35605, 71210, 92573, 163783, 185146, 327566, 462865, 818915, 925730, 1637830, 2129179, 4258358, 10645895, 21291790]

約数ペア:

[(1, 21291790), (2, 10645895), (5, 4258358), (10, 2129179), (13, 1637830), (23, 925730), (26, 818915), (46, 462865), (65, 327566), (115, 185146), (130, 163783), (230, 92573), (299, 71210), (598, 35605), (1495, 14242), (2990, 7121)]