20508505

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{3539}}^1$

素因数の和:3624

約数の個数: 16

約数和(自身を含む): 26337600

約数和(自身を除く): 5829095

約数列:

[1, 5, 19, 61, 95, 305, 1159, 3539, 5795, 17695, 67241, 215879, 336205, 1079395, 4101701, 20508505]

約数ペア:

[(1, 20508505), (5, 4101701), (19, 1079395), (61, 336205), (95, 215879), (305, 67241), (1159, 17695), (3539, 5795)]