21265640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2843}}^1$

素因数の和:2882

約数の個数: 64

約数和(自身を含む): 55287360

約数和(自身を除く): 34021720

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 340, 374, 440, 680, 748, 935, 1496, 1870, 2843, 3740, 5686, 7480, 11372, 14215, 22744, 28430, 31273, 48331, 56860, 62546, 96662, 113720, 125092, 156365, 193324, 241655, 250184, 312730, 386648, 483310, 531641, 625460, 966620, 1063282, 1250920, 1933240, 2126564, 2658205, 4253128, 5316410, 10632820, 21265640]

約数ペア:

[(1, 21265640), (2, 10632820), (4, 5316410), (5, 4253128), (8, 2658205), (10, 2126564), (11, 1933240), (17, 1250920), (20, 1063282), (22, 966620), (34, 625460), (40, 531641), (44, 483310), (55, 386648), (68, 312730), (85, 250184), (88, 241655), (110, 193324), (136, 156365), (170, 125092), (187, 113720), (220, 96662), (340, 62546), (374, 56860), (440, 48331), (680, 31273), (748, 28430), (935, 22744), (1496, 14215), (1870, 11372), (2843, 7480), (3740, 5686)]