20900025

素因数分解:

$3^4\times 5^2\times {\mathrm{10321}}^1$

素因数の和:10343

約数の個数: 30

約数和(自身を含む): 38717822

約数和(自身を除く): 17817797

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 135, 225, 405, 675, 2025, 10321, 30963, 51605, 92889, 154815, 258025, 278667, 464445, 774075, 836001, 1393335, 2322225, 4180005, 6966675, 20900025]

約数ペア:

[(1, 20900025), (3, 6966675), (5, 4180005), (9, 2322225), (15, 1393335), (25, 836001), (27, 774075), (45, 464445), (75, 278667), (81, 258025), (135, 154815), (225, 92889), (405, 51605), (675, 30963), (2025, 10321)]