21075951

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{1231}}^1$

素因数の和:1686

約数の個数: 16

約数和(自身を含む): 30356480

約数和(自身を除く): 9280529

約数列:

[1, 3, 13, 39, 439, 1231, 1317, 3693, 5707, 16003, 17121, 48009, 540409, 1621227, 7025317, 21075951]

約数ペア:

[(1, 21075951), (3, 7025317), (13, 1621227), (39, 540409), (439, 48009), (1231, 17121), (1317, 16003), (3693, 5707)]