21859640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{49681}}^1$

素因数の和:49703

約数の個数: 32

約数和(自身を含む): 53656560

約数和(自身を除く): 31796920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 49681, 99362, 198724, 248405, 397448, 496810, 546491, 993620, 1092982, 1987240, 2185964, 2732455, 4371928, 5464910, 10929820, 21859640]

約数ペア:

[(1, 21859640), (2, 10929820), (4, 5464910), (5, 4371928), (8, 2732455), (10, 2185964), (11, 1987240), (20, 1092982), (22, 993620), (40, 546491), (44, 496810), (55, 397448), (88, 248405), (110, 198724), (220, 99362), (440, 49681)]