663201721

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{2473}}^1$

素因数の和:2921

約数の個数: 24

約数和(自身を含む): 833134344

約数和(自身を除く): 169932623

約数列:

[1, 7, 13, 49, 91, 421, 637, 2473, 2947, 5473, 17311, 20629, 32149, 38311, 121177, 225043, 268177, 1041133, 1575301, 7287931, 13534729, 51015517, 94743103, 663201721]

約数ペア:

[(1, 663201721), (7, 94743103), (13, 51015517), (49, 13534729), (91, 7287931), (421, 1575301), (637, 1041133), (2473, 268177), (2947, 225043), (5473, 121177), (17311, 38311), (20629, 32149)]