21297778

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1\times {\mathrm{1451}}^1$

素因数の和:1673

約数の個数: 16

約数和(自身を含む): 32931360

約数和(自身を除く): 11633582

約数列:

[1, 2, 41, 82, 179, 358, 1451, 2902, 7339, 14678, 59491, 118982, 259729, 519458, 10648889, 21297778]

約数ペア:

[(1, 21297778), (2, 10648889), (41, 519458), (82, 259729), (179, 118982), (358, 59491), (1451, 14678), (2902, 7339)]