20809672

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2741}}^1$

素因数の和:2833

約数の個数: 32

約数和(自身を含む): 42610680

約数和(自身を除く): 21801008

約数列:

[1, 2, 4, 8, 13, 26, 52, 73, 104, 146, 292, 584, 949, 1898, 2741, 3796, 5482, 7592, 10964, 21928, 35633, 71266, 142532, 200093, 285064, 400186, 800372, 1600744, 2601209, 5202418, 10404836, 20809672]

約数ペア:

[(1, 20809672), (2, 10404836), (4, 5202418), (8, 2601209), (13, 1600744), (26, 800372), (52, 400186), (73, 285064), (104, 200093), (146, 142532), (292, 71266), (584, 35633), (949, 21928), (1898, 10964), (2741, 7592), (3796, 5482)]