638705919

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1\times {\mathrm{919}}^1$

素因数の和:1167

約数の個数: 32

約数和(自身を含む): 914112000

約数和(自身を除く): 275406081

約数列:

[1, 3, 19, 57, 89, 137, 267, 411, 919, 1691, 2603, 2757, 5073, 7809, 12193, 17461, 36579, 52383, 81791, 125903, 231667, 245373, 377709, 695001, 1554029, 2392157, 4662087, 7176471, 11205367, 33616101, 212901973, 638705919]

約数ペア:

[(1, 638705919), (3, 212901973), (19, 33616101), (57, 11205367), (89, 7176471), (137, 4662087), (267, 2392157), (411, 1554029), (919, 695001), (1691, 377709), (2603, 245373), (2757, 231667), (5073, 125903), (7809, 81791), (12193, 52383), (17461, 36579)]