31475871

素因数分解:

$3^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{1291}}^1$

素因数の和:1353

約数の個数: 40

約数和(自身を含む): 55028864

約数和(自身を除く): 23552993

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 301, 387, 567, 903, 1161, 1291, 2709, 3483, 3873, 8127, 9037, 11619, 24381, 27111, 34857, 55513, 81333, 104571, 166539, 243999, 388591, 499617, 731997, 1165773, 1498851, 3497319, 4496553, 10491957, 31475871]

約数ペア:

[(1, 31475871), (3, 10491957), (7, 4496553), (9, 3497319), (21, 1498851), (27, 1165773), (43, 731997), (63, 499617), (81, 388591), (129, 243999), (189, 166539), (301, 104571), (387, 81333), (567, 55513), (903, 34857), (1161, 27111), (1291, 24381), (2709, 11619), (3483, 9037), (3873, 8127)]