1987661823

素因数分解:

$3^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{139397}}^1$

素因数の和:139511

約数の個数: 24

約数和(自身を含む): 3114708912

約数和(自身を除く): 1127047089

約数列:

[1, 3, 7, 21, 49, 97, 147, 291, 679, 2037, 4753, 14259, 139397, 418191, 975779, 2927337, 6830453, 13521509, 20491359, 40564527, 94650563, 283951689, 662553941, 1987661823]

約数ペア:

[(1, 1987661823), (3, 662553941), (7, 283951689), (21, 94650563), (49, 40564527), (97, 20491359), (147, 13521509), (291, 6830453), (679, 2927337), (2037, 975779), (4753, 418191), (14259, 139397)]