861850540

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{337}}^1\times {\mathrm{1801}}^1$

素因数の和:2218

約数の個数: 48

約数和(自身を含む): 1841845824

約数和(自身を除く): 979995284

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 337, 355, 674, 710, 1348, 1420, 1685, 1801, 3370, 3602, 6740, 7204, 9005, 18010, 23927, 36020, 47854, 95708, 119635, 127871, 239270, 255742, 478540, 511484, 606937, 639355, 1213874, 1278710, 2427748, 2557420, 3034685, 6069370, 12138740, 43092527, 86185054, 172370108, 215462635, 430925270, 861850540]

約数ペア:

[(1, 861850540), (2, 430925270), (4, 215462635), (5, 172370108), (10, 86185054), (20, 43092527), (71, 12138740), (142, 6069370), (284, 3034685), (337, 2557420), (355, 2427748), (674, 1278710), (710, 1213874), (1348, 639355), (1420, 606937), (1685, 511484), (1801, 478540), (3370, 255742), (3602, 239270), (6740, 127871), (7204, 119635), (9005, 95708), (18010, 47854), (23927, 36020)]