20928785

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{12959}}^1$

素因数の和:13000

約数の個数: 16

約数和(自身を含む): 27993600

約数和(自身を除く): 7064815

約数列:

[1, 5, 17, 19, 85, 95, 323, 1615, 12959, 64795, 220303, 246221, 1101515, 1231105, 4185757, 20928785]

約数ペア:

[(1, 20928785), (5, 4185757), (17, 1231105), (19, 1101515), (85, 246221), (95, 220303), (323, 64795), (1615, 12959)]