19081980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{11779}}^1$

素因数の和:11800

約数の個数: 60

約数和(自身を含む): 59865960

約数和(自身を除く): 40783980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 11779, 23558, 35337, 47116, 58895, 70674, 106011, 117790, 141348, 176685, 212022, 235580, 318033, 353370, 424044, 530055, 636066, 706740, 954099, 1060110, 1272132, 1590165, 1908198, 2120220, 3180330, 3816396, 4770495, 6360660, 9540990, 19081980]

約数ペア:

[(1, 19081980), (2, 9540990), (3, 6360660), (4, 4770495), (5, 3816396), (6, 3180330), (9, 2120220), (10, 1908198), (12, 1590165), (15, 1272132), (18, 1060110), (20, 954099), (27, 706740), (30, 636066), (36, 530055), (45, 424044), (54, 353370), (60, 318033), (81, 235580), (90, 212022), (108, 176685), (135, 141348), (162, 117790), (180, 106011), (270, 70674), (324, 58895), (405, 47116), (540, 35337), (810, 23558), (1620, 11779)]