820155

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{107}}^1$

素因数の和:195

約数の個数: 32

約数和(自身を含む): 1534464

約数和(自身を除く): 714309

約数列:

[1, 3, 5, 7, 15, 21, 35, 73, 105, 107, 219, 321, 365, 511, 535, 749, 1095, 1533, 1605, 2247, 2555, 3745, 7665, 7811, 11235, 23433, 39055, 54677, 117165, 164031, 273385, 820155]

約数ペア:

[(1, 820155), (3, 273385), (5, 164031), (7, 117165), (15, 54677), (21, 39055), (35, 23433), (73, 11235), (105, 7811), (107, 7665), (219, 3745), (321, 2555), (365, 2247), (511, 1605), (535, 1533), (749, 1095)]