178268920

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{61051}}^1$

素因数の和:61135

約数の個数: 32

約数和(自身を含む): 406606320

約数和(自身を除く): 228337400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 61051, 122102, 244204, 305255, 488408, 610510, 1221020, 2442040, 4456723, 8913446, 17826892, 22283615, 35653784, 44567230, 89134460, 178268920]

約数ペア:

[(1, 178268920), (2, 89134460), (4, 44567230), (5, 35653784), (8, 22283615), (10, 17826892), (20, 8913446), (40, 4456723), (73, 2442040), (146, 1221020), (292, 610510), (365, 488408), (584, 305255), (730, 244204), (1460, 122102), (2920, 61051)]