208601281

素因数分解:

$7^4\times {\mathrm{283}}^1\times {\mathrm{307}}^1$

素因数の和:618

約数の個数: 20

約数和(自身を含む): 245009072

約数和(自身を除く): 36407791

約数列:

[1, 7, 49, 283, 307, 343, 1981, 2149, 2401, 13867, 15043, 86881, 97069, 105301, 608167, 679483, 737107, 4257169, 29800183, 208601281]

約数ペア:

[(1, 208601281), (7, 29800183), (49, 4257169), (283, 737107), (307, 679483), (343, 608167), (1981, 105301), (2149, 97069), (2401, 86881), (13867, 15043)]