21019812

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{2699}}^1$

素因数の和:2776

約数の個数: 48

約数和(自身を含む): 54432000

約数和(自身を除く): 33412188

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 59, 66, 118, 132, 177, 236, 354, 649, 708, 1298, 1947, 2596, 2699, 3894, 5398, 7788, 8097, 10796, 16194, 29689, 32388, 59378, 89067, 118756, 159241, 178134, 318482, 356268, 477723, 636964, 955446, 1751651, 1910892, 3503302, 5254953, 7006604, 10509906, 21019812]

約数ペア:

[(1, 21019812), (2, 10509906), (3, 7006604), (4, 5254953), (6, 3503302), (11, 1910892), (12, 1751651), (22, 955446), (33, 636964), (44, 477723), (59, 356268), (66, 318482), (118, 178134), (132, 159241), (177, 118756), (236, 89067), (354, 59378), (649, 32388), (708, 29689), (1298, 16194), (1947, 10796), (2596, 8097), (2699, 7788), (3894, 5398)]