278266209

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{977}}^1$

素因数の和:1169

約数の個数: 32

約数和(自身を含む): 409664640

約数和(自身を除く): 131398431

約数列:

[1, 3, 13, 39, 67, 109, 201, 327, 871, 977, 1417, 2613, 2931, 4251, 7303, 12701, 21909, 38103, 65459, 94939, 106493, 196377, 284817, 319479, 850967, 1384409, 2552901, 4153227, 7135031, 21405093, 92755403, 278266209]

約数ペア:

[(1, 278266209), (3, 92755403), (13, 21405093), (39, 7135031), (67, 4153227), (109, 2552901), (201, 1384409), (327, 850967), (871, 319479), (977, 284817), (1417, 196377), (2613, 106493), (2931, 94939), (4251, 65459), (7303, 38103), (12701, 21909)]