9891025

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{37}}^2$

素因数の和:118

約数の個数: 27

約数和(自身を含む): 13390419

約数和(自身を除く): 3499394

約数列:

[1, 5, 17, 25, 37, 85, 185, 289, 425, 629, 925, 1369, 1445, 3145, 6845, 7225, 10693, 15725, 23273, 34225, 53465, 116365, 267325, 395641, 581825, 1978205, 9891025]

約数ペア:

[(1, 9891025), (5, 1978205), (17, 581825), (25, 395641), (37, 267325), (85, 116365), (185, 53465), (289, 34225), (425, 23273), (629, 15725), (925, 10693), (1369, 7225), (1445, 6845)]