123162920

素因数分解:

$2^3\times 5^1\times {\mathrm{647}}^1\times {\mathrm{4759}}^1$

素因数の和:5417

約数の個数: 32

約数和(自身を含む): 277603200

約数和(自身を除く): 154440280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 647, 1294, 2588, 3235, 4759, 5176, 6470, 9518, 12940, 19036, 23795, 25880, 38072, 47590, 95180, 190360, 3079073, 6158146, 12316292, 15395365, 24632584, 30790730, 61581460, 123162920]

約数ペア:

[(1, 123162920), (2, 61581460), (4, 30790730), (5, 24632584), (8, 15395365), (10, 12316292), (20, 6158146), (40, 3079073), (647, 190360), (1294, 95180), (2588, 47590), (3235, 38072), (4759, 25880), (5176, 23795), (6470, 19036), (9518, 12940)]