19930075

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{137}}^1$

素因数の和:204

約数の個数: 36

約数和(自身を含む): 28388808

約数和(自身を除く): 8458733

約数列:

[1, 5, 11, 23, 25, 55, 115, 137, 253, 275, 529, 575, 685, 1265, 1507, 2645, 3151, 3425, 5819, 6325, 7535, 13225, 15755, 29095, 34661, 37675, 72473, 78775, 145475, 173305, 362365, 797203, 866525, 1811825, 3986015, 19930075]

約数ペア:

[(1, 19930075), (5, 3986015), (11, 1811825), (23, 866525), (25, 797203), (55, 362365), (115, 173305), (137, 145475), (253, 78775), (275, 72473), (529, 37675), (575, 34661), (685, 29095), (1265, 15755), (1507, 13225), (2645, 7535), (3151, 6325), (3425, 5819)]