639808

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{769}}^1$

素因数の和:794

約数の個数: 28

約数和(自身を含む): 1369060

約数和(自身を除く): 729252

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 208, 416, 769, 832, 1538, 3076, 6152, 9997, 12304, 19994, 24608, 39988, 49216, 79976, 159952, 319904, 639808]

約数ペア:

[(1, 639808), (2, 319904), (4, 159952), (8, 79976), (13, 49216), (16, 39988), (26, 24608), (32, 19994), (52, 12304), (64, 9997), (104, 6152), (208, 3076), (416, 1538), (769, 832)]