20685075

素因数分解:

$3^1\times 5^2\times {\mathrm{389}}^1\times {\mathrm{709}}^1$

素因数の和:1111

約数の個数: 24

約数和(自身を含む): 34335600

約数和(自身を除く): 13650525

約数列:

[1, 3, 5, 15, 25, 75, 389, 709, 1167, 1945, 2127, 3545, 5835, 9725, 10635, 17725, 29175, 53175, 275801, 827403, 1379005, 4137015, 6895025, 20685075]

約数ペア:

[(1, 20685075), (3, 6895025), (5, 4137015), (15, 1379005), (25, 827403), (75, 275801), (389, 53175), (709, 29175), (1167, 17725), (1945, 10635), (2127, 9725), (3545, 5835)]