66408920

素因数分解:

$2^3\times 5^1\times {\mathrm{373}}^1\times {\mathrm{4451}}^1$

素因数の和:4835

約数の個数: 32

約数和(自身を含む): 149854320

約数和(自身を除く): 83445400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 373, 746, 1492, 1865, 2984, 3730, 4451, 7460, 8902, 14920, 17804, 22255, 35608, 44510, 89020, 178040, 1660223, 3320446, 6640892, 8301115, 13281784, 16602230, 33204460, 66408920]

約数ペア:

[(1, 66408920), (2, 33204460), (4, 16602230), (5, 13281784), (8, 8301115), (10, 6640892), (20, 3320446), (40, 1660223), (373, 178040), (746, 89020), (1492, 44510), (1865, 35608), (2984, 22255), (3730, 17804), (4451, 14920), (7460, 8902)]