20551575

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{859}}^1$

素因数の和:912

約数の個数: 48

約数和(自身を含む): 38390400

約数和(自身を除く): 17838825

約数列:

[1, 3, 5, 11, 15, 25, 29, 33, 55, 75, 87, 145, 165, 275, 319, 435, 725, 825, 859, 957, 1595, 2175, 2577, 4295, 4785, 7975, 9449, 12885, 21475, 23925, 24911, 28347, 47245, 64425, 74733, 124555, 141735, 236225, 274021, 373665, 622775, 708675, 822063, 1370105, 1868325, 4110315, 6850525, 20551575]

約数ペア:

[(1, 20551575), (3, 6850525), (5, 4110315), (11, 1868325), (15, 1370105), (25, 822063), (29, 708675), (33, 622775), (55, 373665), (75, 274021), (87, 236225), (145, 141735), (165, 124555), (275, 74733), (319, 64425), (435, 47245), (725, 28347), (825, 24911), (859, 23925), (957, 21475), (1595, 12885), (2175, 9449), (2577, 7975), (4295, 4785)]