81218007

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{16931}}^1$

素因数の和:16991

約数の個数: 24

約数和(自身を含む): 129428208

約数和(自身を除く): 48210201

約数列:

[1, 3, 9, 13, 39, 41, 117, 123, 369, 533, 1599, 4797, 16931, 50793, 152379, 220103, 660309, 694171, 1980927, 2082513, 6247539, 9024223, 27072669, 81218007]

約数ペア:

[(1, 81218007), (3, 27072669), (9, 9024223), (13, 6247539), (39, 2082513), (41, 1980927), (117, 694171), (123, 660309), (369, 220103), (533, 152379), (1599, 50793), (4797, 16931)]