31131891

素因数分解:

$3^3\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1297}}^1$

素因数の和:1440

約数の個数: 32

約数和(自身を含む): 53166080

約数和(自身を除く): 22034189

約数列:

[1, 3, 7, 9, 21, 27, 63, 127, 189, 381, 889, 1143, 1297, 2667, 3429, 3891, 8001, 9079, 11673, 24003, 27237, 35019, 81711, 164719, 245133, 494157, 1153033, 1482471, 3459099, 4447413, 10377297, 31131891]

約数ペア:

[(1, 31131891), (3, 10377297), (7, 4447413), (9, 3459099), (21, 1482471), (27, 1153033), (63, 494157), (127, 245133), (189, 164719), (381, 81711), (889, 35019), (1143, 27237), (1297, 24003), (2667, 11673), (3429, 9079), (3891, 8001)]