129781253

素因数分解:

$7^4\times {\mathrm{191}}^1\times {\mathrm{283}}^1$

素因数の和:502

約数の個数: 20

約数和(自身を含む): 152732928

約数和(自身を除く): 22951675

約数列:

[1, 7, 49, 191, 283, 343, 1337, 1981, 2401, 9359, 13867, 54053, 65513, 97069, 378371, 458591, 679483, 2648597, 18540179, 129781253]

約数ペア:

[(1, 129781253), (7, 18540179), (49, 2648597), (191, 679483), (283, 458591), (343, 378371), (1337, 97069), (1981, 65513), (2401, 54053), (9359, 13867)]