81405025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{13183}}^1$

素因数の和:13225

約数の個数: 24

約数和(自身を含む): 114437120

約数和(自身を除く): 33032095

約数列:

[1, 5, 13, 19, 25, 65, 95, 247, 325, 475, 1235, 6175, 13183, 65915, 171379, 250477, 329575, 856895, 1252385, 3256201, 4284475, 6261925, 16281005, 81405025]

約数ペア:

[(1, 81405025), (5, 16281005), (13, 6261925), (19, 4284475), (25, 3256201), (65, 1252385), (95, 856895), (247, 329575), (325, 250477), (475, 171379), (1235, 65915), (6175, 13183)]