21429291

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{71}}^2\times {\mathrm{109}}^1$

素因数の和:267

約数の個数: 24

約数和(自身を含む): 31496080

約数和(自身を除く): 10066789

約数列:

[1, 3, 13, 39, 71, 109, 213, 327, 923, 1417, 2769, 4251, 5041, 7739, 15123, 23217, 65533, 100607, 196599, 301821, 549469, 1648407, 7143097, 21429291]

約数ペア:

[(1, 21429291), (3, 7143097), (13, 1648407), (39, 549469), (71, 301821), (109, 196599), (213, 100607), (327, 65533), (923, 23217), (1417, 15123), (2769, 7739), (4251, 5041)]