20491625

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{2129}}^1$

素因数の和:2162

約数の個数: 32

約数和(自身を含む): 31898880

約数和(自身を除く): 11407255

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 125, 175, 275, 385, 875, 1375, 1925, 2129, 9625, 10645, 14903, 23419, 53225, 74515, 117095, 163933, 266125, 372575, 585475, 819665, 1862875, 2927375, 4098325, 20491625]

約数ペア:

[(1, 20491625), (5, 4098325), (7, 2927375), (11, 1862875), (25, 819665), (35, 585475), (55, 372575), (77, 266125), (125, 163933), (175, 117095), (275, 74515), (385, 53225), (875, 23419), (1375, 14903), (1925, 10645), (2129, 9625)]