261007825

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{163}}^1\times {\mathrm{379}}^1$

素因数の和:578

約数の個数: 36

約数和(自身を含む): 353541360

約数和(自身を除く): 92533535

約数列:

[1, 5, 13, 25, 65, 163, 169, 325, 379, 815, 845, 1895, 2119, 4075, 4225, 4927, 9475, 10595, 24635, 27547, 52975, 61777, 64051, 123175, 137735, 308885, 320255, 688675, 803101, 1544425, 1601275, 4015505, 10440313, 20077525, 52201565, 261007825]

約数ペア:

[(1, 261007825), (5, 52201565), (13, 20077525), (25, 10440313), (65, 4015505), (163, 1601275), (169, 1544425), (325, 803101), (379, 688675), (815, 320255), (845, 308885), (1895, 137735), (2119, 123175), (4075, 64051), (4225, 61777), (4927, 52975), (9475, 27547), (10595, 24635)]