19215865

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{1249}}^1$

素因数の和:1452

約数の個数: 16

約数和(自身を含む): 24570000

約数和(自身を除く): 5354135

約数列:

[1, 5, 17, 85, 181, 905, 1249, 3077, 6245, 15385, 21233, 106165, 226069, 1130345, 3843173, 19215865]

約数ペア:

[(1, 19215865), (5, 3843173), (17, 1130345), (85, 226069), (181, 106165), (905, 21233), (1249, 15385), (3077, 6245)]