20747835

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{139}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 16991685

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 107, 139, 155, 279, 321, 417, 465, 535, 695, 963, 1251, 1395, 1605, 2085, 3317, 4309, 4815, 6255, 9951, 12927, 14873, 16585, 21545, 29853, 38781, 44619, 49755, 64635, 74365, 133857, 149265, 193905, 223095, 461063, 669285, 1383189, 2305315, 4149567, 6915945, 20747835]

約数ペア:

[(1, 20747835), (3, 6915945), (5, 4149567), (9, 2305315), (15, 1383189), (31, 669285), (45, 461063), (93, 223095), (107, 193905), (139, 149265), (155, 133857), (279, 74365), (321, 64635), (417, 49755), (465, 44619), (535, 38781), (695, 29853), (963, 21545), (1251, 16585), (1395, 14873), (1605, 12927), (2085, 9951), (3317, 6255), (4309, 4815)]