20561838

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{863}}^1$

素因数の和:917

約数の個数: 48

約数和(自身を含む): 47402496

約数和(自身を除く): 26840658

約数列:

[1, 2, 3, 6, 11, 19, 22, 33, 38, 57, 66, 114, 209, 361, 418, 627, 722, 863, 1083, 1254, 1726, 2166, 2589, 3971, 5178, 7942, 9493, 11913, 16397, 18986, 23826, 28479, 32794, 49191, 56958, 98382, 180367, 311543, 360734, 541101, 623086, 934629, 1082202, 1869258, 3426973, 6853946, 10280919, 20561838]

約数ペア:

[(1, 20561838), (2, 10280919), (3, 6853946), (6, 3426973), (11, 1869258), (19, 1082202), (22, 934629), (33, 623086), (38, 541101), (57, 360734), (66, 311543), (114, 180367), (209, 98382), (361, 56958), (418, 49191), (627, 32794), (722, 28479), (863, 23826), (1083, 18986), (1254, 16397), (1726, 11913), (2166, 9493), (2589, 7942), (3971, 5178)]