81275607

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{21149}}^1$

素因数の和:21223

約数の個数: 24

約数和(自身を含む): 136375200

約数和(自身を除く): 55099593

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 21149, 63447, 148043, 190341, 444129, 1290089, 1332387, 3870267, 9030623, 11610801, 27091869, 81275607]

約数ペア:

[(1, 81275607), (3, 27091869), (7, 11610801), (9, 9030623), (21, 3870267), (61, 1332387), (63, 1290089), (183, 444129), (427, 190341), (549, 148043), (1281, 63447), (3843, 21149)]