19980857560

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{3308089}}^1$

素因数の和:3308251

約数の個数: 32

約数和(自身を含む): 45254671200

約数和(自身を除く): 25273813640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 3020, 6040, 3308089, 6616178, 13232356, 16540445, 26464712, 33080890, 66161780, 132323560, 499521439, 999042878, 1998085756, 2497607195, 3996171512, 4995214390, 9990428780, 19980857560]

約数ペア:

[(1, 19980857560), (2, 9990428780), (4, 4995214390), (5, 3996171512), (8, 2497607195), (10, 1998085756), (20, 999042878), (40, 499521439), (151, 132323560), (302, 66161780), (604, 33080890), (755, 26464712), (1208, 16540445), (1510, 13232356), (3020, 6616178), (6040, 3308089)]