209210913

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{628261}}^1$

素因数の和:628304

約数の個数: 12

約数和(自身を含む): 310361428

約数和(自身を除く): 101150515

約数列:

[1, 3, 9, 37, 111, 333, 628261, 1884783, 5654349, 23245657, 69736971, 209210913]

約数ペア:

[(1, 209210913), (3, 69736971), (9, 23245657), (37, 5654349), (111, 1884783), (333, 628261)]