19900380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{11437}}^1$

素因数の和:11478

約数の個数: 48

約数和(自身を含む): 57647520

約数和(自身を除く): 37747140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 29, 30, 58, 60, 87, 116, 145, 174, 290, 348, 435, 580, 870, 1740, 11437, 22874, 34311, 45748, 57185, 68622, 114370, 137244, 171555, 228740, 331673, 343110, 663346, 686220, 995019, 1326692, 1658365, 1990038, 3316730, 3980076, 4975095, 6633460, 9950190, 19900380]

約数ペア:

[(1, 19900380), (2, 9950190), (3, 6633460), (4, 4975095), (5, 3980076), (6, 3316730), (10, 1990038), (12, 1658365), (15, 1326692), (20, 995019), (29, 686220), (30, 663346), (58, 343110), (60, 331673), (87, 228740), (116, 171555), (145, 137244), (174, 114370), (290, 68622), (348, 57185), (435, 45748), (580, 34311), (870, 22874), (1740, 11437)]