20167640

素因数分解:

$2^3\times 5^1\times {\mathrm{347}}^1\times {\mathrm{1453}}^1$

素因数の和:1811

約数の個数: 32

約数和(自身を含む): 45539280

約数和(自身を除く): 25371640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 347, 694, 1388, 1453, 1735, 2776, 2906, 3470, 5812, 6940, 7265, 11624, 13880, 14530, 29060, 58120, 504191, 1008382, 2016764, 2520955, 4033528, 5041910, 10083820, 20167640]

約数ペア:

[(1, 20167640), (2, 10083820), (4, 5041910), (5, 4033528), (8, 2520955), (10, 2016764), (20, 1008382), (40, 504191), (347, 58120), (694, 29060), (1388, 14530), (1453, 13880), (1735, 11624), (2776, 7265), (2906, 6940), (3470, 5812)]