81384723

素因数分解:

$3^3\times 7^1\times {\mathrm{491}}^1\times {\mathrm{877}}^1$

素因数の和:1384

約数の個数: 32

約数和(自身を含む): 138232320

約数和(自身を除く): 56847597

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 491, 877, 1473, 2631, 3437, 4419, 6139, 7893, 10311, 13257, 18417, 23679, 30933, 55251, 92799, 165753, 430607, 1291821, 3014249, 3875463, 9042747, 11626389, 27128241, 81384723]

約数ペア:

[(1, 81384723), (3, 27128241), (7, 11626389), (9, 9042747), (21, 3875463), (27, 3014249), (63, 1291821), (189, 430607), (491, 165753), (877, 92799), (1473, 55251), (2631, 30933), (3437, 23679), (4419, 18417), (6139, 13257), (7893, 10311)]