31115721

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{293}}^1\times {\mathrm{389}}^1$

素因数の和:705

約数の個数: 32

約数和(自身を含む): 51367680

約数和(自身を除く): 20251959

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 293, 389, 879, 1167, 2051, 2723, 3809, 5057, 6153, 8169, 11427, 15171, 26663, 35399, 79989, 106197, 113977, 341931, 797839, 1481701, 2393517, 4445103, 10371907, 31115721]

約数ペア:

[(1, 31115721), (3, 10371907), (7, 4445103), (13, 2393517), (21, 1481701), (39, 797839), (91, 341931), (273, 113977), (293, 106197), (389, 79989), (879, 35399), (1167, 26663), (2051, 15171), (2723, 11427), (3809, 8169), (5057, 6153)]