21347495

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19319}}^1$

素因数の和:19354

約数の個数: 16

約数和(自身を含む): 29211840

約数和(自身を除く): 7864345

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 19319, 96595, 251147, 328423, 1255735, 1642115, 4269499, 21347495]

約数ペア:

[(1, 21347495), (5, 4269499), (13, 1642115), (17, 1255735), (65, 328423), (85, 251147), (221, 96595), (1105, 19319)]