261798719

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{167}}^1$

素因数の和:324

約数の個数: 48

約数和(自身を含む): 347493888

約数和(自身を除く): 85695169

約数列:

[1, 7, 13, 23, 49, 91, 107, 161, 167, 299, 637, 749, 1127, 1169, 1391, 2093, 2171, 2461, 3841, 5243, 8183, 9737, 14651, 15197, 17227, 17869, 26887, 31993, 49933, 68159, 106379, 120589, 125083, 188209, 223951, 232297, 349531, 410987, 875581, 1567657, 1626079, 2446717, 2876909, 5342831, 11382553, 20138363, 37399817, 261798719]

約数ペア:

[(1, 261798719), (7, 37399817), (13, 20138363), (23, 11382553), (49, 5342831), (91, 2876909), (107, 2446717), (161, 1626079), (167, 1567657), (299, 875581), (637, 410987), (749, 349531), (1127, 232297), (1169, 223951), (1391, 188209), (2093, 125083), (2171, 120589), (2461, 106379), (3841, 68159), (5243, 49933), (8183, 31993), (9737, 26887), (14651, 17869), (15197, 17227)]