21012237

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:290

約数の個数: 32

約数和(自身を含む): 32175360

約数和(自身を除く): 11163123

約数列:

[1, 3, 9, 27, 71, 97, 113, 213, 291, 339, 639, 873, 1017, 1917, 2619, 3051, 6887, 8023, 10961, 20661, 24069, 32883, 61983, 72207, 98649, 185949, 216621, 295947, 778231, 2334693, 7004079, 21012237]

約数ペア:

[(1, 21012237), (3, 7004079), (9, 2334693), (27, 778231), (71, 295947), (97, 216621), (113, 185949), (213, 98649), (291, 72207), (339, 61983), (639, 32883), (873, 24069), (1017, 20661), (1917, 10961), (2619, 8023), (3051, 6887)]