20448045

素因数分解:

$3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1741}}^1$

素因数の和:1787

約数の個数: 40

約数和(自身を含む): 37940760

約数和(自身を除く): 17492715

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 81, 87, 135, 145, 261, 405, 435, 783, 1305, 1741, 2349, 3915, 5223, 8705, 11745, 15669, 26115, 47007, 50489, 78345, 141021, 151467, 235035, 252445, 454401, 705105, 757335, 1363203, 2272005, 4089609, 6816015, 20448045]

約数ペア:

[(1, 20448045), (3, 6816015), (5, 4089609), (9, 2272005), (15, 1363203), (27, 757335), (29, 705105), (45, 454401), (81, 252445), (87, 235035), (135, 151467), (145, 141021), (261, 78345), (405, 50489), (435, 47007), (783, 26115), (1305, 15669), (1741, 11745), (2349, 8705), (3915, 5223)]