208522120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{337}}^1\times {\mathrm{499}}^1$

素因数の和:878

約数の個数: 64

約数和(自身を含む): 486720000

約数和(自身を除く): 278197880

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 337, 499, 620, 674, 998, 1240, 1348, 1685, 1996, 2495, 2696, 3370, 3992, 4990, 6740, 9980, 10447, 13480, 15469, 19960, 20894, 30938, 41788, 52235, 61876, 77345, 83576, 104470, 123752, 154690, 168163, 208940, 309380, 336326, 417880, 618760, 672652, 840815, 1345304, 1681630, 3363260, 5213053, 6726520, 10426106, 20852212, 26065265, 41704424, 52130530, 104261060, 208522120]

約数ペア:

[(1, 208522120), (2, 104261060), (4, 52130530), (5, 41704424), (8, 26065265), (10, 20852212), (20, 10426106), (31, 6726520), (40, 5213053), (62, 3363260), (124, 1681630), (155, 1345304), (248, 840815), (310, 672652), (337, 618760), (499, 417880), (620, 336326), (674, 309380), (998, 208940), (1240, 168163), (1348, 154690), (1685, 123752), (1996, 104470), (2495, 83576), (2696, 77345), (3370, 61876), (3992, 52235), (4990, 41788), (6740, 30938), (9980, 20894), (10447, 19960), (13480, 15469)]