19829615

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{757}}^1$

素因数の和:819

約数の個数: 24

約数和(自身を含む): 26633088

約数和(自身を除く): 6803473

約数列:

[1, 5, 13, 31, 65, 155, 169, 403, 757, 845, 2015, 3785, 5239, 9841, 23467, 26195, 49205, 117335, 127933, 305071, 639665, 1525355, 3965923, 19829615]

約数ペア:

[(1, 19829615), (5, 3965923), (13, 1525355), (31, 639665), (65, 305071), (155, 127933), (169, 117335), (403, 49205), (757, 26195), (845, 23467), (2015, 9841), (3785, 5239)]