20971908

素因数分解:

$2^2\times 3^2\times {\mathrm{439}}^1\times {\mathrm{1327}}^1$

素因数の和:1776

約数の個数: 36

約数和(自身を含む): 53173120

約数和(自身を除く): 32201212

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 439, 878, 1317, 1327, 1756, 2634, 2654, 3951, 3981, 5268, 5308, 7902, 7962, 11943, 15804, 15924, 23886, 47772, 582553, 1165106, 1747659, 2330212, 3495318, 5242977, 6990636, 10485954, 20971908]

約数ペア:

[(1, 20971908), (2, 10485954), (3, 6990636), (4, 5242977), (6, 3495318), (9, 2330212), (12, 1747659), (18, 1165106), (36, 582553), (439, 47772), (878, 23886), (1317, 15924), (1327, 15804), (1756, 11943), (2634, 7962), (2654, 7902), (3951, 5308), (3981, 5268)]