21752017

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{3989}}^1$

素因数の和:4056

約数の個数: 16

約数和(自身を含む): 26812800

約数和(自身を除く): 5060783

約数列:

[1, 7, 19, 41, 133, 287, 779, 3989, 5453, 27923, 75791, 163549, 530537, 1144843, 3107431, 21752017]

約数ペア:

[(1, 21752017), (7, 3107431), (19, 1144843), (41, 530537), (133, 163549), (287, 75791), (779, 27923), (3989, 5453)]