21545811

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3931}}^1$

素因数の和:3976

約数の個数: 32

約数和(自身を含む): 37747200

約数和(自身を除く): 16201389

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 189, 203, 261, 609, 783, 1827, 3931, 5481, 11793, 27517, 35379, 82551, 106137, 113999, 247653, 341997, 742959, 797993, 1025991, 2393979, 3077973, 7181937, 21545811]

約数ペア:

[(1, 21545811), (3, 7181937), (7, 3077973), (9, 2393979), (21, 1025991), (27, 797993), (29, 742959), (63, 341997), (87, 247653), (189, 113999), (203, 106137), (261, 82551), (609, 35379), (783, 27517), (1827, 11793), (3931, 5481)]