20178728

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{6451}}^1$

素因数の和:6497

約数の個数: 32

約数和(自身を含む): 41808960

約数和(自身を除く): 21630232

約数列:

[1, 2, 4, 8, 17, 23, 34, 46, 68, 92, 136, 184, 391, 782, 1564, 3128, 6451, 12902, 25804, 51608, 109667, 148373, 219334, 296746, 438668, 593492, 877336, 1186984, 2522341, 5044682, 10089364, 20178728]

約数ペア:

[(1, 20178728), (2, 10089364), (4, 5044682), (8, 2522341), (17, 1186984), (23, 877336), (34, 593492), (46, 438668), (68, 296746), (92, 219334), (136, 148373), (184, 109667), (391, 51608), (782, 25804), (1564, 12902), (3128, 6451)]