1991921643

素因数分解:

$3^2\times {\mathrm{157}}^1\times {\mathrm{701}}^1\times {\mathrm{2011}}^1$

素因数の和:2875

約数の個数: 24

約数和(自身を含む): 2901118896

約数和(自身を除く): 909197253

約数列:

[1, 3, 9, 157, 471, 701, 1413, 2011, 2103, 6033, 6309, 18099, 110057, 315727, 330171, 947181, 990513, 1409711, 2841543, 4229133, 12687399, 221324627, 663973881, 1991921643]

約数ペア:

[(1, 1991921643), (3, 663973881), (9, 221324627), (157, 12687399), (471, 4229133), (701, 2841543), (1413, 1409711), (2011, 990513), (2103, 947181), (6033, 330171), (6309, 315727), (18099, 110057)]