81306351

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{21157}}^1$

素因数の和:21231

約数の個数: 24

約数和(自身を含む): 136426784

約数和(自身を除く): 55120433

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 21157, 63471, 148099, 190413, 444297, 1290577, 1332891, 3871731, 9034039, 11615193, 27102117, 81306351]

約数ペア:

[(1, 81306351), (3, 27102117), (7, 11615193), (9, 9034039), (21, 3871731), (61, 1332891), (63, 1290577), (183, 444297), (427, 190413), (549, 148099), (1281, 63471), (3843, 21157)]