21043728

素因数分解:

$2^4\times 3^2\times {\mathrm{317}}^1\times {\mathrm{461}}^1$

素因数の和:792

約数の個数: 60

約数和(自身を含む): 59207148

約数和(自身を除く): 38163420

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 317, 461, 634, 922, 951, 1268, 1383, 1844, 1902, 2536, 2766, 2853, 3688, 3804, 4149, 5072, 5532, 5706, 7376, 7608, 8298, 11064, 11412, 15216, 16596, 22128, 22824, 33192, 45648, 66384, 146137, 292274, 438411, 584548, 876822, 1169096, 1315233, 1753644, 2338192, 2630466, 3507288, 5260932, 7014576, 10521864, 21043728]

約数ペア:

[(1, 21043728), (2, 10521864), (3, 7014576), (4, 5260932), (6, 3507288), (8, 2630466), (9, 2338192), (12, 1753644), (16, 1315233), (18, 1169096), (24, 876822), (36, 584548), (48, 438411), (72, 292274), (144, 146137), (317, 66384), (461, 45648), (634, 33192), (922, 22824), (951, 22128), (1268, 16596), (1383, 15216), (1844, 11412), (1902, 11064), (2536, 8298), (2766, 7608), (2853, 7376), (3688, 5706), (3804, 5532), (4149, 5072)]