21000901240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47729321}}^1$

素因数の和:47729343

約数の個数: 32

約数和(自身を含む): 51547667760

約数和(自身を除く): 30546766520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47729321, 95458642, 190917284, 238646605, 381834568, 477293210, 525022531, 954586420, 1050045062, 1909172840, 2100090124, 2625112655, 4200180248, 5250225310, 10500450620, 21000901240]

約数ペア:

[(1, 21000901240), (2, 10500450620), (4, 5250225310), (5, 4200180248), (8, 2625112655), (10, 2100090124), (11, 1909172840), (20, 1050045062), (22, 954586420), (40, 525022531), (44, 477293210), (55, 381834568), (88, 238646605), (110, 190917284), (220, 95458642), (440, 47729321)]