20275515

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3851}}^1$

素因数の和:3881

約数の個数: 40

約数和(自身を含む): 39151728

約数和(自身を除く): 18876213

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 81, 117, 135, 195, 351, 405, 585, 1053, 1755, 3851, 5265, 11553, 19255, 34659, 50063, 57765, 103977, 150189, 173295, 250315, 311931, 450567, 519885, 750945, 1351701, 1559655, 2252835, 4055103, 6758505, 20275515]

約数ペア:

[(1, 20275515), (3, 6758505), (5, 4055103), (9, 2252835), (13, 1559655), (15, 1351701), (27, 750945), (39, 519885), (45, 450567), (65, 311931), (81, 250315), (117, 173295), (135, 150189), (195, 103977), (351, 57765), (405, 50063), (585, 34659), (1053, 19255), (1755, 11553), (3851, 5265)]