257130385

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{22447}}^1$

素因数の和:22560

約数の個数: 16

約数和(自身を含む): 323251200

約数和(自身を除く): 66120815

約数列:

[1, 5, 29, 79, 145, 395, 2291, 11455, 22447, 112235, 650963, 1773313, 3254815, 8866565, 51426077, 257130385]

約数ペア:

[(1, 257130385), (5, 51426077), (29, 8866565), (79, 3254815), (145, 1773313), (395, 650963), (2291, 112235), (11455, 22447)]