389770199

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{225431}}^1$

素因数の和:225470

約数の個数: 16

約数和(自身を含む): 504967680

約数和(自身を除く): 115197481

約数列:

[1, 7, 13, 19, 91, 133, 247, 1729, 225431, 1578017, 2930603, 4283189, 20514221, 29982323, 55681457, 389770199]

約数ペア:

[(1, 389770199), (7, 55681457), (13, 29982323), (19, 20514221), (91, 4283189), (133, 2930603), (247, 1578017), (1729, 225431)]