20316015

素因数分解:

$3^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{727}}^1$

素因数の和:770

約数の個数: 48

約数和(自身を含む): 38158848

約数和(自身を除く): 17842833

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 243, 345, 405, 621, 727, 1035, 1215, 1863, 2181, 3105, 3635, 5589, 6543, 9315, 10905, 16721, 19629, 27945, 32715, 50163, 58887, 83605, 98145, 150489, 176661, 250815, 294435, 451467, 752445, 883305, 1354401, 2257335, 4063203, 6772005, 20316015]

約数ペア:

[(1, 20316015), (3, 6772005), (5, 4063203), (9, 2257335), (15, 1354401), (23, 883305), (27, 752445), (45, 451467), (69, 294435), (81, 250815), (115, 176661), (135, 150489), (207, 98145), (243, 83605), (345, 58887), (405, 50163), (621, 32715), (727, 27945), (1035, 19629), (1215, 16721), (1863, 10905), (2181, 9315), (3105, 6543), (3635, 5589)]