20859587

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^2\times {\mathrm{71}}^1$

素因数の和:191

約数の個数: 24

約数和(自身を含む): 26000640

約数和(自身を除く): 5141053

約数列:

[1, 7, 19, 47, 71, 133, 329, 497, 893, 1349, 2209, 3337, 6251, 9443, 15463, 23359, 41971, 63403, 156839, 293797, 443821, 1097873, 2979941, 20859587]

約数ペア:

[(1, 20859587), (7, 2979941), (19, 1097873), (47, 443821), (71, 293797), (133, 156839), (329, 63403), (497, 41971), (893, 23359), (1349, 15463), (2209, 9443), (3337, 6251)]