1299690021

素因数分解:

$3^1\times 7^1\times {\mathrm{61890001}}^1$

素因数の和:61890011

約数の個数: 8

約数和(自身を含む): 1980480064

約数和(自身を除く): 680790043

約数列:

[1, 3, 7, 21, 61890001, 185670003, 433230007, 1299690021]

約数ペア:

[(1, 1299690021), (3, 433230007), (7, 185670003), (21, 61890001)]