66905657

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{641}}^1$

素因数の和:729

約数の個数: 32

約数和(自身を含む): 87435264

約数和(自身を除く): 20529607

約数列:

[1, 7, 13, 31, 37, 91, 217, 259, 403, 481, 641, 1147, 2821, 3367, 4487, 8029, 8333, 14911, 19871, 23717, 58331, 104377, 139097, 166019, 258323, 308321, 735227, 1808261, 2158247, 5146589, 9557951, 66905657]

約数ペア:

[(1, 66905657), (7, 9557951), (13, 5146589), (31, 2158247), (37, 1808261), (91, 735227), (217, 308321), (259, 258323), (403, 166019), (481, 139097), (641, 104377), (1147, 58331), (2821, 23717), (3367, 19871), (4487, 14911), (8029, 8333)]