66209980

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{7541}}^1$

素因数の和:7989

約数の個数: 24

約数和(自身を含む): 139376160

約数和(自身を除く): 73166180

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 4390, 7541, 8780, 15082, 30164, 37705, 75410, 150820, 3310499, 6620998, 13241996, 16552495, 33104990, 66209980]

約数ペア:

[(1, 66209980), (2, 33104990), (4, 16552495), (5, 13241996), (10, 6620998), (20, 3310499), (439, 150820), (878, 75410), (1756, 37705), (2195, 30164), (4390, 15082), (7541, 8780)]