20636875

素因数分解:

$5^4\times 7^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:169

約数の個数: 40

約数和(自身を含む): 30365280

約数和(自身を除く): 9728405

約数列:

[1, 5, 7, 25, 35, 53, 89, 125, 175, 265, 371, 445, 623, 625, 875, 1325, 1855, 2225, 3115, 4375, 4717, 6625, 9275, 11125, 15575, 23585, 33019, 33125, 46375, 55625, 77875, 117925, 165095, 231875, 389375, 589625, 825475, 2948125, 4127375, 20636875]

約数ペア:

[(1, 20636875), (5, 4127375), (7, 2948125), (25, 825475), (35, 589625), (53, 389375), (89, 231875), (125, 165095), (175, 117925), (265, 77875), (371, 55625), (445, 46375), (623, 33125), (625, 33019), (875, 23585), (1325, 15575), (1855, 11125), (2225, 9275), (3115, 6625), (4375, 4717)]