18928605

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{151}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 31212288

約数和(自身を除く): 12283683

約数列:

[1, 3, 5, 15, 61, 137, 151, 183, 305, 411, 453, 685, 755, 915, 2055, 2265, 8357, 9211, 20687, 25071, 27633, 41785, 46055, 62061, 103435, 125355, 138165, 310305, 1261907, 3785721, 6309535, 18928605]

約数ペア:

[(1, 18928605), (3, 6309535), (5, 3785721), (15, 1261907), (61, 310305), (137, 138165), (151, 125355), (183, 103435), (305, 62061), (411, 46055), (453, 41785), (685, 27633), (755, 25071), (915, 20687), (2055, 9211), (2265, 8357)]