66720017

素因数分解:

$7^3\times {\mathrm{13}}^2\times {\mathrm{1151}}^1$

素因数の和:1198

約数の個数: 24

約数和(自身を含む): 84326400

約数和(自身を除く): 17606383

約数列:

[1, 7, 13, 49, 91, 169, 343, 637, 1151, 1183, 4459, 8057, 8281, 14963, 56399, 57967, 104741, 194519, 394793, 733187, 1361633, 5132309, 9531431, 66720017]

約数ペア:

[(1, 66720017), (7, 9531431), (13, 5132309), (49, 1361633), (91, 733187), (169, 394793), (343, 194519), (637, 104741), (1151, 57967), (1183, 56399), (4459, 14963), (8057, 8281)]