19897228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{1601}}^1$

素因数の和:1857

約数の個数: 24

約数和(自身を含む): 37679040

約数和(自身を除く): 17781812

約数列:

[1, 2, 4, 13, 26, 52, 239, 478, 956, 1601, 3107, 3202, 6214, 6404, 12428, 20813, 41626, 83252, 382639, 765278, 1530556, 4974307, 9948614, 19897228]

約数ペア:

[(1, 19897228), (2, 9948614), (4, 4974307), (13, 1530556), (26, 765278), (52, 382639), (239, 83252), (478, 41626), (956, 20813), (1601, 12428), (3107, 6404), (3202, 6214)]