209465425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{577}}^1\times {\mathrm{1117}}^1$

素因数の和:1717

約数の個数: 24

約数和(自身を含む): 280452536

約数和(自身を除く): 70987111

約数列:

[1, 5, 13, 25, 65, 325, 577, 1117, 2885, 5585, 7501, 14425, 14521, 27925, 37505, 72605, 187525, 363025, 644509, 3222545, 8378617, 16112725, 41893085, 209465425]

約数ペア:

[(1, 209465425), (5, 41893085), (13, 16112725), (25, 8378617), (65, 3222545), (325, 644509), (577, 363025), (1117, 187525), (2885, 72605), (5585, 37505), (7501, 27925), (14425, 14521)]