47981997

素因数分解:

$3^3\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1999}}^1$

素因数の和:2142

約数の個数: 32

約数和(自身を含む): 81920000

約数和(自身を除く): 33938003

約数列:

[1, 3, 7, 9, 21, 27, 63, 127, 189, 381, 889, 1143, 1999, 2667, 3429, 5997, 8001, 13993, 17991, 24003, 41979, 53973, 125937, 253873, 377811, 761619, 1777111, 2284857, 5331333, 6854571, 15993999, 47981997]

約数ペア:

[(1, 47981997), (3, 15993999), (7, 6854571), (9, 5331333), (21, 2284857), (27, 1777111), (63, 761619), (127, 377811), (189, 253873), (381, 125937), (889, 53973), (1143, 41979), (1999, 24003), (2667, 17991), (3429, 13993), (5997, 8001)]