18990125

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1973}}^1$

素因数の和:2006

約数の個数: 32

約数和(自身を含む): 29562624

約数和(自身を除く): 10572499

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 125, 175, 275, 385, 875, 1375, 1925, 1973, 9625, 9865, 13811, 21703, 49325, 69055, 108515, 151921, 246625, 345275, 542575, 759605, 1726375, 2712875, 3798025, 18990125]

約数ペア:

[(1, 18990125), (5, 3798025), (7, 2712875), (11, 1726375), (25, 759605), (35, 542575), (55, 345275), (77, 246625), (125, 151921), (175, 108515), (275, 69055), (385, 49325), (875, 21703), (1375, 13811), (1925, 9865), (1973, 9625)]