20109999

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3877}}^1$

素因数の和:3919

約数の個数: 32

約数和(自身を含む): 34746880

約数和(自身を除く): 14636881

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 3877, 5187, 11631, 27139, 50401, 73663, 81417, 151203, 220989, 352807, 515641, 957619, 1058421, 1546923, 2872857, 6703333, 20109999]

約数ペア:

[(1, 20109999), (3, 6703333), (7, 2872857), (13, 1546923), (19, 1058421), (21, 957619), (39, 515641), (57, 352807), (91, 220989), (133, 151203), (247, 81417), (273, 73663), (399, 50401), (741, 27139), (1729, 11631), (3877, 5187)]