21413740

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{13553}}^1$

素因数の和:13641

約数の個数: 24

約数和(自身を含む): 45541440

約数和(自身を除く): 24127700

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 13553, 27106, 54212, 67765, 135530, 271060, 1070687, 2141374, 4282748, 5353435, 10706870, 21413740]

約数ペア:

[(1, 21413740), (2, 10706870), (4, 5353435), (5, 4282748), (10, 2141374), (20, 1070687), (79, 271060), (158, 135530), (316, 67765), (395, 54212), (790, 27106), (1580, 13553)]