20266875

素因数分解:

$3^3\times 5^4\times {\mathrm{1201}}^1$

素因数の和:1230

約数の個数: 40

約数和(自身を含む): 37550480

約数和(自身を除く): 17283605

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 125, 135, 225, 375, 625, 675, 1125, 1201, 1875, 3375, 3603, 5625, 6005, 10809, 16875, 18015, 30025, 32427, 54045, 90075, 150125, 162135, 270225, 450375, 750625, 810675, 1351125, 2251875, 4053375, 6755625, 20266875]

約数ペア:

[(1, 20266875), (3, 6755625), (5, 4053375), (9, 2251875), (15, 1351125), (25, 810675), (27, 750625), (45, 450375), (75, 270225), (125, 162135), (135, 150125), (225, 90075), (375, 54045), (625, 32427), (675, 30025), (1125, 18015), (1201, 16875), (1875, 10809), (3375, 6005), (3603, 5625)]