20638625

素因数分解:

$5^3\times 7^1\times {\mathrm{103}}^1\times {\mathrm{229}}^1$

素因数の和:354

約数の個数: 32

約数和(自身を含む): 29852160

約数和(自身を除く): 9213535

約数列:

[1, 5, 7, 25, 35, 103, 125, 175, 229, 515, 721, 875, 1145, 1603, 2575, 3605, 5725, 8015, 12875, 18025, 23587, 28625, 40075, 90125, 117935, 165109, 200375, 589675, 825545, 2948375, 4127725, 20638625]

約数ペア:

[(1, 20638625), (5, 4127725), (7, 2948375), (25, 825545), (35, 589675), (103, 200375), (125, 165109), (175, 117935), (229, 90125), (515, 40075), (721, 28625), (875, 23587), (1145, 18025), (1603, 12875), (2575, 8015), (3605, 5725)]