520067821

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{19913}}^1$

素因数の和:19981

約数の個数: 24

約数和(自身を含む): 667437624

約数和(自身を除く): 147369803

約数列:

[1, 7, 13, 41, 49, 91, 287, 533, 637, 2009, 3731, 19913, 26117, 139391, 258869, 816433, 975737, 1812083, 5715031, 10613629, 12684581, 40005217, 74295403, 520067821]

約数ペア:

[(1, 520067821), (7, 74295403), (13, 40005217), (41, 12684581), (49, 10613629), (91, 5715031), (287, 1812083), (533, 975737), (637, 816433), (2009, 258869), (3731, 139391), (19913, 26117)]