664900

素因数分解:

$2^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{109}}^1$

素因数の和:184

約数の個数: 36

約数和(自身を含む): 1479940

約数和(自身を除く): 815040

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 61, 100, 109, 122, 218, 244, 305, 436, 545, 610, 1090, 1220, 1525, 2180, 2725, 3050, 5450, 6100, 6649, 10900, 13298, 26596, 33245, 66490, 132980, 166225, 332450, 664900]

約数ペア:

[(1, 664900), (2, 332450), (4, 166225), (5, 132980), (10, 66490), (20, 33245), (25, 26596), (50, 13298), (61, 10900), (100, 6649), (109, 6100), (122, 5450), (218, 3050), (244, 2725), (305, 2180), (436, 1525), (545, 1220), (610, 1090)]