21000332140

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17213387}}^1$

素因数の和:17213457

約数の個数: 24

約数和(自身を含む): 44823662352

約数和(自身を除く): 23823330212

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 17213387, 34426774, 68853548, 86066935, 172133870, 344267740, 1050016607, 2100033214, 4200066428, 5250083035, 10500166070, 21000332140]

約数ペア:

[(1, 21000332140), (2, 10500166070), (4, 5250083035), (5, 4200066428), (10, 2100033214), (20, 1050016607), (61, 344267740), (122, 172133870), (244, 86066935), (305, 68853548), (610, 34426774), (1220, 17213387)]