81497241

素因数分解:

$3^2\times 7^2\times {\mathrm{181}}^1\times {\mathrm{1021}}^1$

素因数の和:1222

約数の個数: 36

約数和(自身を含む): 137828964

約数和(自身を除く): 56331723

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 181, 441, 543, 1021, 1267, 1629, 3063, 3801, 7147, 8869, 9189, 11403, 21441, 26607, 50029, 64323, 79821, 150087, 184801, 450261, 554403, 1293607, 1663209, 3880821, 9055249, 11642463, 27165747, 81497241]

約数ペア:

[(1, 81497241), (3, 27165747), (7, 11642463), (9, 9055249), (21, 3880821), (49, 1663209), (63, 1293607), (147, 554403), (181, 450261), (441, 184801), (543, 150087), (1021, 79821), (1267, 64323), (1629, 50029), (3063, 26607), (3801, 21441), (7147, 11403), (8869, 9189)]