21288410

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{14887}}^1$

素因数の和:14918

約数の個数: 32

約数和(自身を含む): 45021312

約数和(自身を除く): 23732902

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 715, 1430, 14887, 29774, 74435, 148870, 163757, 193531, 327514, 387062, 818785, 967655, 1637570, 1935310, 2128841, 4257682, 10644205, 21288410]

約数ペア:

[(1, 21288410), (2, 10644205), (5, 4257682), (10, 2128841), (11, 1935310), (13, 1637570), (22, 967655), (26, 818785), (55, 387062), (65, 327514), (110, 193531), (130, 163757), (143, 148870), (286, 74435), (715, 29774), (1430, 14887)]