20417175

素因数分解:

$3^2\times 5^2\times {\mathrm{103}}^1\times {\mathrm{881}}^1$

素因数の和:1000

約数の個数: 36

約数和(自身を含む): 36966384

約数和(自身を除く): 16549209

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 103, 225, 309, 515, 881, 927, 1545, 2575, 2643, 4405, 4635, 7725, 7929, 13215, 22025, 23175, 39645, 66075, 90743, 198225, 272229, 453715, 816687, 1361145, 2268575, 4083435, 6805725, 20417175]

約数ペア:

[(1, 20417175), (3, 6805725), (5, 4083435), (9, 2268575), (15, 1361145), (25, 816687), (45, 453715), (75, 272229), (103, 198225), (225, 90743), (309, 66075), (515, 39645), (881, 23175), (927, 22025), (1545, 13215), (2575, 7929), (2643, 7725), (4405, 4635)]