181661571

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31687}}^1$

素因数の和:31720

約数の個数: 36

約数和(自身を含む): 328731312

約数和(自身を除く): 147069741

約数列:

[1, 3, 7, 9, 13, 21, 39, 49, 63, 91, 117, 147, 273, 441, 637, 819, 1911, 5733, 31687, 95061, 221809, 285183, 411931, 665427, 1235793, 1552663, 1996281, 2883517, 3707379, 4657989, 8650551, 13973967, 20184619, 25951653, 60553857, 181661571]

約数ペア:

[(1, 181661571), (3, 60553857), (7, 25951653), (9, 20184619), (13, 13973967), (21, 8650551), (39, 4657989), (49, 3707379), (63, 2883517), (91, 1996281), (117, 1552663), (147, 1235793), (273, 665427), (441, 411931), (637, 285183), (819, 221809), (1911, 95061), (5733, 31687)]