64820721

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{99571}}^1$

素因数の和:99612

約数の個数: 16

約数和(自身を含む): 101961728

約数和(自身を除く): 37141007

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 99571, 298713, 696997, 2090991, 3086701, 9260103, 21606907, 64820721]

約数ペア:

[(1, 64820721), (3, 21606907), (7, 9260103), (21, 3086701), (31, 2090991), (93, 696997), (217, 298713), (651, 99571)]