20698695

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{563}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 38712960

約数和(自身を除く): 18014265

約数列:

[1, 3, 5, 9, 15, 19, 43, 45, 57, 95, 129, 171, 215, 285, 387, 563, 645, 817, 855, 1689, 1935, 2451, 2815, 4085, 5067, 7353, 8445, 10697, 12255, 24209, 25335, 32091, 36765, 53485, 72627, 96273, 121045, 160455, 217881, 363135, 459971, 481365, 1089405, 1379913, 2299855, 4139739, 6899565, 20698695]

約数ペア:

[(1, 20698695), (3, 6899565), (5, 4139739), (9, 2299855), (15, 1379913), (19, 1089405), (43, 481365), (45, 459971), (57, 363135), (95, 217881), (129, 160455), (171, 121045), (215, 96273), (285, 72627), (387, 53485), (563, 36765), (645, 32091), (817, 25335), (855, 24209), (1689, 12255), (1935, 10697), (2451, 8445), (2815, 7353), (4085, 5067)]