19861219

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{211}}^1$

素因数の和:355

約数の個数: 24

約数和(自身を含む): 24796368

約数和(自身を除く): 4935149

約数列:

[1, 7, 17, 49, 113, 119, 211, 791, 833, 1477, 1921, 3587, 5537, 10339, 13447, 23843, 25109, 94129, 166901, 175763, 405331, 1168307, 2837317, 19861219]

約数ペア:

[(1, 19861219), (7, 2837317), (17, 1168307), (49, 405331), (113, 175763), (119, 166901), (211, 94129), (791, 25109), (833, 23843), (1477, 13447), (1921, 10339), (3587, 5537)]