20354265

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 36873408

約数和(自身を除く): 16519143

約数列:

[1, 3, 5, 9, 15, 43, 45, 67, 129, 157, 201, 215, 335, 387, 471, 603, 645, 785, 1005, 1413, 1935, 2355, 2881, 3015, 6751, 7065, 8643, 10519, 14405, 20253, 25929, 31557, 33755, 43215, 52595, 60759, 94671, 101265, 129645, 157785, 303795, 452317, 473355, 1356951, 2261585, 4070853, 6784755, 20354265]

約数ペア:

[(1, 20354265), (3, 6784755), (5, 4070853), (9, 2261585), (15, 1356951), (43, 473355), (45, 452317), (67, 303795), (129, 157785), (157, 129645), (201, 101265), (215, 94671), (335, 60759), (387, 52595), (471, 43215), (603, 33755), (645, 31557), (785, 25929), (1005, 20253), (1413, 14405), (1935, 10519), (2355, 8643), (2881, 7065), (3015, 6751)]