21838505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{17683}}^1$

素因数の和:17720

約数の個数: 16

約数和(自身を含む): 29709120

約数和(自身を除く): 7870615

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 17683, 88415, 229879, 335977, 1149395, 1679885, 4367701, 21838505]

約数ペア:

[(1, 21838505), (5, 4367701), (13, 1679885), (19, 1149395), (65, 335977), (95, 229879), (247, 88415), (1235, 17683)]