20979273

素因数分解:

$3^1\times 7^1\times {\mathrm{347}}^1\times {\mathrm{2879}}^1$

素因数の和:3236

約数の個数: 16

約数和(自身を含む): 32071680

約数和(自身を除く): 11092407

約数列:

[1, 3, 7, 21, 347, 1041, 2429, 2879, 7287, 8637, 20153, 60459, 999013, 2997039, 6993091, 20979273]

約数ペア:

[(1, 20979273), (3, 6993091), (7, 2997039), (21, 999013), (347, 60459), (1041, 20153), (2429, 8637), (2879, 7287)]