20157858

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1019}}^1$

素因数の和:1191

約数の個数: 48

約数和(自身を含む): 50281920

約数和(自身を除く): 30124062

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 157, 314, 471, 942, 1019, 1099, 1413, 2038, 2198, 2826, 3057, 3297, 6114, 6594, 7133, 9171, 9891, 14266, 18342, 19782, 21399, 42798, 64197, 128394, 159983, 319966, 479949, 959898, 1119881, 1439847, 2239762, 2879694, 3359643, 6719286, 10078929, 20157858]

約数ペア:

[(1, 20157858), (2, 10078929), (3, 6719286), (6, 3359643), (7, 2879694), (9, 2239762), (14, 1439847), (18, 1119881), (21, 959898), (42, 479949), (63, 319966), (126, 159983), (157, 128394), (314, 64197), (471, 42798), (942, 21399), (1019, 19782), (1099, 18342), (1413, 14266), (2038, 9891), (2198, 9171), (2826, 7133), (3057, 6594), (3297, 6114)]