21987810

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18793}}^1$

素因数の和:18819

約数の個数: 48

約数和(自身を含む): 61569144

約数和(自身を除く): 39581334

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 30, 39, 45, 65, 78, 90, 117, 130, 195, 234, 390, 585, 1170, 18793, 37586, 56379, 93965, 112758, 169137, 187930, 244309, 281895, 338274, 488618, 563790, 732927, 845685, 1221545, 1465854, 1691370, 2198781, 2443090, 3664635, 4397562, 7329270, 10993905, 21987810]

約数ペア:

[(1, 21987810), (2, 10993905), (3, 7329270), (5, 4397562), (6, 3664635), (9, 2443090), (10, 2198781), (13, 1691370), (15, 1465854), (18, 1221545), (26, 845685), (30, 732927), (39, 563790), (45, 488618), (65, 338274), (78, 281895), (90, 244309), (117, 187930), (130, 169137), (195, 112758), (234, 93965), (390, 56379), (585, 37586), (1170, 18793)]