19807431

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{491}}^1$

素因数の和:631

約数の個数: 32

約数和(自身を含む): 32306688

約数和(自身を除く): 12499257

約数列:

[1, 3, 7, 17, 21, 51, 113, 119, 339, 357, 491, 791, 1473, 1921, 2373, 3437, 5763, 8347, 10311, 13447, 25041, 40341, 55483, 58429, 166449, 175287, 388381, 943211, 1165143, 2829633, 6602477, 19807431]

約数ペア:

[(1, 19807431), (3, 6602477), (7, 2829633), (17, 1165143), (21, 943211), (51, 388381), (113, 175287), (119, 166449), (339, 58429), (357, 55483), (491, 40341), (791, 25041), (1473, 13447), (1921, 10311), (2373, 8347), (3437, 5763)]