20979679

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{193}}^1\times {\mathrm{293}}^1$

素因数の和:546

約数の個数: 16

約数和(自身を含む): 24639552

約数和(自身を除く): 3659873

約数列:

[1, 7, 53, 193, 293, 371, 1351, 2051, 10229, 15529, 56549, 71603, 108703, 395843, 2997097, 20979679]

約数ペア:

[(1, 20979679), (7, 2997097), (53, 395843), (193, 108703), (293, 71603), (371, 56549), (1351, 15529), (2051, 10229)]