639732009

素因数分解:

$3^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{279481}}^1$

素因数の和:279600

約数の個数: 16

約数和(自身を含む): 983776640

約数和(自身を除く): 344044631

約数列:

[1, 3, 7, 21, 109, 327, 763, 2289, 279481, 838443, 1956367, 5869101, 30463429, 91390287, 213244003, 639732009]

約数ペア:

[(1, 639732009), (3, 213244003), (7, 91390287), (21, 30463429), (109, 5869101), (327, 1956367), (763, 838443), (2289, 279481)]