640962543

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{797}}^1\times {\mathrm{1213}}^1$

素因数の和:2043

約数の個数: 32

約数和(自身を含む): 976522176

約数和(自身を除く): 335559633

約数列:

[1, 3, 13, 17, 39, 51, 221, 663, 797, 1213, 2391, 3639, 10361, 13549, 15769, 20621, 31083, 40647, 47307, 61863, 176137, 268073, 528411, 804219, 966761, 2900283, 12567893, 16434937, 37703679, 49304811, 213654181, 640962543]

約数ペア:

[(1, 640962543), (3, 213654181), (13, 49304811), (17, 37703679), (39, 16434937), (51, 12567893), (221, 2900283), (663, 966761), (797, 804219), (1213, 528411), (2391, 268073), (3639, 176137), (10361, 61863), (13549, 47307), (15769, 40647), (20621, 31083)]