20133880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1249}}^1$

素因数の和:1304

約数の個数: 64

約数和(自身を含む): 50400000

約数和(自身を除く): 30266120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1240, 1249, 1612, 2015, 2498, 3224, 4030, 4996, 6245, 8060, 9992, 12490, 16120, 16237, 24980, 32474, 38719, 49960, 64948, 77438, 81185, 129896, 154876, 162370, 193595, 309752, 324740, 387190, 503347, 649480, 774380, 1006694, 1548760, 2013388, 2516735, 4026776, 5033470, 10066940, 20133880]

約数ペア:

[(1, 20133880), (2, 10066940), (4, 5033470), (5, 4026776), (8, 2516735), (10, 2013388), (13, 1548760), (20, 1006694), (26, 774380), (31, 649480), (40, 503347), (52, 387190), (62, 324740), (65, 309752), (104, 193595), (124, 162370), (130, 154876), (155, 129896), (248, 81185), (260, 77438), (310, 64948), (403, 49960), (520, 38719), (620, 32474), (806, 24980), (1240, 16237), (1249, 16120), (1612, 12490), (2015, 9992), (2498, 8060), (3224, 6245), (4030, 4996)]