20196920

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2393}}^1$

素因数の和:2615

約数の個数: 32

約数和(自身を含む): 45677520

約数和(自身を除く): 25480600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 2393, 4220, 4786, 8440, 9572, 11965, 19144, 23930, 47860, 95720, 504923, 1009846, 2019692, 2524615, 4039384, 5049230, 10098460, 20196920]

約数ペア:

[(1, 20196920), (2, 10098460), (4, 5049230), (5, 4039384), (8, 2524615), (10, 2019692), (20, 1009846), (40, 504923), (211, 95720), (422, 47860), (844, 23930), (1055, 19144), (1688, 11965), (2110, 9572), (2393, 8440), (4220, 4786)]