90505025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{16381}}^1$

素因数の和:16421

約数の個数: 24

約数和(自身を含む): 127976184

約数和(自身を除く): 37471159

約数列:

[1, 5, 13, 17, 25, 65, 85, 221, 325, 425, 1105, 5525, 16381, 81905, 212953, 278477, 409525, 1064765, 1392385, 3620201, 5323825, 6961925, 18101005, 90505025]

約数ペア:

[(1, 90505025), (5, 18101005), (13, 6961925), (17, 5323825), (25, 3620201), (65, 1392385), (85, 1064765), (221, 409525), (325, 278477), (425, 212953), (1105, 81905), (5525, 16381)]