21371240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{48571}}^1$

素因数の和:48593

約数の個数: 32

約数和(自身を含む): 52457760

約数和(自身を除く): 31086520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 48571, 97142, 194284, 242855, 388568, 485710, 534281, 971420, 1068562, 1942840, 2137124, 2671405, 4274248, 5342810, 10685620, 21371240]

約数ペア:

[(1, 21371240), (2, 10685620), (4, 5342810), (5, 4274248), (8, 2671405), (10, 2137124), (11, 1942840), (20, 1068562), (22, 971420), (40, 534281), (44, 485710), (55, 388568), (88, 242855), (110, 194284), (220, 97142), (440, 48571)]