20915586

素因数分解:

$2^1\times 3^2\times {\mathrm{211}}^1\times {\mathrm{5507}}^1$

素因数の和:5726

約数の個数: 24

約数和(自身を含む): 45540144

約数和(自身を除く): 24624558

約数列:

[1, 2, 3, 6, 9, 18, 211, 422, 633, 1266, 1899, 3798, 5507, 11014, 16521, 33042, 49563, 99126, 1161977, 2323954, 3485931, 6971862, 10457793, 20915586]

約数ペア:

[(1, 20915586), (2, 10457793), (3, 6971862), (6, 3485931), (9, 2323954), (18, 1161977), (211, 99126), (422, 49563), (633, 33042), (1266, 16521), (1899, 11014), (3798, 5507)]