21513144555

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2203087}}^1$

素因数の和:2203136

約数の個数: 48

約数和(自身を含む): 43991261184

約数和(自身を除く): 22478116629

約数列:

[1, 3, 5, 7, 9, 15, 21, 31, 35, 45, 63, 93, 105, 155, 217, 279, 315, 465, 651, 1085, 1395, 1953, 3255, 9765, 2203087, 6609261, 11015435, 15421609, 19827783, 33046305, 46264827, 68295697, 77108045, 99138915, 138794481, 204887091, 231324135, 341478485, 478069879, 614661273, 693972405, 1024435455, 1434209637, 2390349395, 3073306365, 4302628911, 7171048185, 21513144555]

約数ペア:

[(1, 21513144555), (3, 7171048185), (5, 4302628911), (7, 3073306365), (9, 2390349395), (15, 1434209637), (21, 1024435455), (31, 693972405), (35, 614661273), (45, 478069879), (63, 341478485), (93, 231324135), (105, 204887091), (155, 138794481), (217, 99138915), (279, 77108045), (315, 68295697), (465, 46264827), (651, 33046305), (1085, 19827783), (1395, 15421609), (1953, 11015435), (3255, 6609261), (9765, 2203087)]