206979921

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{4219}}^1$

素因数の和:4330

約数の個数: 32

約数和(自身を含む): 324096000

約数和(自身を除く): 117116079

約数列:

[1, 3, 9, 23, 27, 69, 79, 207, 237, 621, 711, 1817, 2133, 4219, 5451, 12657, 16353, 37971, 49059, 97037, 113913, 291111, 333301, 873333, 999903, 2619999, 2999709, 7665923, 8999127, 22997769, 68993307, 206979921]

約数ペア:

[(1, 206979921), (3, 68993307), (9, 22997769), (23, 8999127), (27, 7665923), (69, 2999709), (79, 2619999), (207, 999903), (237, 873333), (621, 333301), (711, 291111), (1817, 113913), (2133, 97037), (4219, 49059), (5451, 37971), (12657, 16353)]