21931240

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{3631}}^1$

素因数の和:3793

約数の個数: 32

約数和(自身を含む): 49685760

約数和(自身を除く): 27754520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 3020, 3631, 6040, 7262, 14524, 18155, 29048, 36310, 72620, 145240, 548281, 1096562, 2193124, 2741405, 4386248, 5482810, 10965620, 21931240]

約数ペア:

[(1, 21931240), (2, 10965620), (4, 5482810), (5, 4386248), (8, 2741405), (10, 2193124), (20, 1096562), (40, 548281), (151, 145240), (302, 72620), (604, 36310), (755, 29048), (1208, 18155), (1510, 14524), (3020, 7262), (3631, 6040)]