399000004

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{71711}}^1$

素因数の和:71835

約数の個数: 24

約数和(自身を含む): 758999808

約数和(自身を除く): 359999804

約数列:

[1, 2, 4, 13, 26, 52, 107, 214, 428, 1391, 2782, 5564, 71711, 143422, 286844, 932243, 1864486, 3728972, 7673077, 15346154, 30692308, 99750001, 199500002, 399000004]

約数ペア:

[(1, 399000004), (2, 199500002), (4, 99750001), (13, 30692308), (26, 15346154), (52, 7673077), (107, 3728972), (214, 1864486), (428, 932243), (1391, 286844), (2782, 143422), (5564, 71711)]