1991805

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 3452544

約数和(自身を除く): 1460739

約数列:

[1, 3, 5, 15, 17, 51, 73, 85, 107, 219, 255, 321, 365, 535, 1095, 1241, 1605, 1819, 3723, 5457, 6205, 7811, 9095, 18615, 23433, 27285, 39055, 117165, 132787, 398361, 663935, 1991805]

約数ペア:

[(1, 1991805), (3, 663935), (5, 398361), (15, 132787), (17, 117165), (51, 39055), (73, 27285), (85, 23433), (107, 18615), (219, 9095), (255, 7811), (321, 6205), (365, 5457), (535, 3723), (1095, 1819), (1241, 1605)]