20728370

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{3889}}^1$

素因数の和:3950

約数の個数: 32

約数和(自身を含む): 41171760

約数和(自身を除く): 20443390

約数列:

[1, 2, 5, 10, 13, 26, 41, 65, 82, 130, 205, 410, 533, 1066, 2665, 3889, 5330, 7778, 19445, 38890, 50557, 101114, 159449, 252785, 318898, 505570, 797245, 1594490, 2072837, 4145674, 10364185, 20728370]

約数ペア:

[(1, 20728370), (2, 10364185), (5, 4145674), (10, 2072837), (13, 1594490), (26, 797245), (41, 505570), (65, 318898), (82, 252785), (130, 159449), (205, 101114), (410, 50557), (533, 38890), (1066, 19445), (2665, 7778), (3889, 5330)]