20518416

素因数分解:

$2^4\times 3^2\times {\mathrm{89}}^1\times {\mathrm{1601}}^1$

素因数の和:1704

約数の個数: 60

約数和(自身を含む): 58104540

約数和(自身を除く): 37586124

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 89, 144, 178, 267, 356, 534, 712, 801, 1068, 1424, 1601, 1602, 2136, 3202, 3204, 4272, 4803, 6404, 6408, 9606, 12808, 12816, 14409, 19212, 25616, 28818, 38424, 57636, 76848, 115272, 142489, 230544, 284978, 427467, 569956, 854934, 1139912, 1282401, 1709868, 2279824, 2564802, 3419736, 5129604, 6839472, 10259208, 20518416]

約数ペア:

[(1, 20518416), (2, 10259208), (3, 6839472), (4, 5129604), (6, 3419736), (8, 2564802), (9, 2279824), (12, 1709868), (16, 1282401), (18, 1139912), (24, 854934), (36, 569956), (48, 427467), (72, 284978), (89, 230544), (144, 142489), (178, 115272), (267, 76848), (356, 57636), (534, 38424), (712, 28818), (801, 25616), (1068, 19212), (1424, 14409), (1601, 12816), (1602, 12808), (2136, 9606), (3202, 6408), (3204, 6404), (4272, 4803)]