20839725

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{4027}}^1$

素因数の和:4066

約数の個数: 36

約数和(自身を含む): 38958816

約数和(自身を除く): 18119091

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 207, 225, 345, 575, 1035, 1725, 4027, 5175, 12081, 20135, 36243, 60405, 92621, 100675, 181215, 277863, 302025, 463105, 833589, 906075, 1389315, 2315525, 4167945, 6946575, 20839725]

約数ペア:

[(1, 20839725), (3, 6946575), (5, 4167945), (9, 2315525), (15, 1389315), (23, 906075), (25, 833589), (45, 463105), (69, 302025), (75, 277863), (115, 181215), (207, 100675), (225, 92621), (345, 60405), (575, 36243), (1035, 20135), (1725, 12081), (4027, 5175)]