21011010980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1489}}^1\times {\mathrm{24329}}^1$

素因数の和:25856

約数の個数: 48

約数和(自身を含む): 45677142000

約数和(自身を除く): 24666131020

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 1489, 2978, 5956, 7445, 14890, 24329, 29780, 43181, 48658, 86362, 97316, 121645, 172724, 215905, 243290, 431810, 486580, 705541, 863620, 1411082, 2822164, 3527705, 7055410, 14110820, 36225881, 72451762, 144903524, 181129405, 362258810, 724517620, 1050550549, 2101101098, 4202202196, 5252752745, 10505505490, 21011010980]

約数ペア:

[(1, 21011010980), (2, 10505505490), (4, 5252752745), (5, 4202202196), (10, 2101101098), (20, 1050550549), (29, 724517620), (58, 362258810), (116, 181129405), (145, 144903524), (290, 72451762), (580, 36225881), (1489, 14110820), (2978, 7055410), (5956, 3527705), (7445, 2822164), (14890, 1411082), (24329, 863620), (29780, 705541), (43181, 486580), (48658, 431810), (86362, 243290), (97316, 215905), (121645, 172724)]