389506

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1$

素因数の和:297

約数の個数: 16

約数和(自身を含む): 641088

約数和(自身を除く): 251582

約数列:

[1, 2, 13, 26, 71, 142, 211, 422, 923, 1846, 2743, 5486, 14981, 29962, 194753, 389506]

約数ペア:

[(1, 389506), (2, 194753), (13, 29962), (26, 14981), (71, 5486), (142, 2743), (211, 1846), (422, 923)]