20215867

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{1567}}^1$

素因数の和:1690

約数の個数: 16

約数和(自身を含む): 24586240

約数和(自身を除く): 4370373

約数列:

[1, 7, 19, 97, 133, 679, 1567, 1843, 10969, 12901, 29773, 151999, 208411, 1063993, 2887981, 20215867]

約数ペア:

[(1, 20215867), (7, 2887981), (19, 1063993), (97, 208411), (133, 151999), (679, 29773), (1567, 12901), (1843, 10969)]