20954912

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1009}}^1$

素因数の和:1089

約数の個数: 48

約数和(自身を含む): 45813600

約数和(自身を除く): 24858688

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 59, 88, 118, 176, 236, 352, 472, 649, 944, 1009, 1298, 1888, 2018, 2596, 4036, 5192, 8072, 10384, 11099, 16144, 20768, 22198, 32288, 44396, 59531, 88792, 119062, 177584, 238124, 355168, 476248, 654841, 952496, 1309682, 1904992, 2619364, 5238728, 10477456, 20954912]

約数ペア:

[(1, 20954912), (2, 10477456), (4, 5238728), (8, 2619364), (11, 1904992), (16, 1309682), (22, 952496), (32, 654841), (44, 476248), (59, 355168), (88, 238124), (118, 177584), (176, 119062), (236, 88792), (352, 59531), (472, 44396), (649, 32288), (944, 22198), (1009, 20768), (1298, 16144), (1888, 11099), (2018, 10384), (2596, 8072), (4036, 5192)]