21351850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{307}}^1$

素因数の和:439

約数の個数: 48

約数和(自身を含む): 43309728

約数和(自身を除く): 21957878

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 107, 130, 214, 307, 325, 535, 614, 650, 1070, 1391, 1535, 2675, 2782, 3070, 3991, 5350, 6955, 7675, 7982, 13910, 15350, 19955, 32849, 34775, 39910, 65698, 69550, 99775, 164245, 199550, 328490, 427037, 821225, 854074, 1642450, 2135185, 4270370, 10675925, 21351850]

約数ペア:

[(1, 21351850), (2, 10675925), (5, 4270370), (10, 2135185), (13, 1642450), (25, 854074), (26, 821225), (50, 427037), (65, 328490), (107, 199550), (130, 164245), (214, 99775), (307, 69550), (325, 65698), (535, 39910), (614, 34775), (650, 32849), (1070, 19955), (1391, 15350), (1535, 13910), (2675, 7982), (2782, 7675), (3070, 6955), (3991, 5350)]