20318375

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2111}}^1$

素因数の和:2144

約数の個数: 32

約数和(自身を含む): 31629312

約数和(自身を除く): 11310937

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 125, 175, 275, 385, 875, 1375, 1925, 2111, 9625, 10555, 14777, 23221, 52775, 73885, 116105, 162547, 263875, 369425, 580525, 812735, 1847125, 2902625, 4063675, 20318375]

約数ペア:

[(1, 20318375), (5, 4063675), (7, 2902625), (11, 1847125), (25, 812735), (35, 580525), (55, 369425), (77, 263875), (125, 162547), (175, 116105), (275, 73885), (385, 52775), (875, 23221), (1375, 14777), (1925, 10555), (2111, 9625)]