163991425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{283}}^1\times {\mathrm{1783}}^1$

素因数の和:2089

約数の個数: 24

約数和(自身を含む): 219888704

約数和(自身を除く): 55897279

約数列:

[1, 5, 13, 25, 65, 283, 325, 1415, 1783, 3679, 7075, 8915, 18395, 23179, 44575, 91975, 115895, 504589, 579475, 2522945, 6559657, 12614725, 32798285, 163991425]

約数ペア:

[(1, 163991425), (5, 32798285), (13, 12614725), (25, 6559657), (65, 2522945), (283, 579475), (325, 504589), (1415, 115895), (1783, 91975), (3679, 44575), (7075, 23179), (8915, 18395)]