81391947

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{443}}^1\times {\mathrm{673}}^1$

素因数の和:1139

約数の個数: 32

約数和(自身を含む): 134066688

約数和(自身を除く): 52674741

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 443, 673, 1329, 2019, 3101, 4711, 5759, 8749, 9303, 14133, 17277, 26247, 40313, 61243, 120939, 183729, 298139, 894417, 2086973, 3875807, 6260919, 11627421, 27130649, 81391947]

約数ペア:

[(1, 81391947), (3, 27130649), (7, 11627421), (13, 6260919), (21, 3875807), (39, 2086973), (91, 894417), (273, 298139), (443, 183729), (673, 120939), (1329, 61243), (2019, 40313), (3101, 26247), (4711, 17277), (5759, 14133), (8749, 9303)]