80546660

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{433}}^1$

素因数の和:644

約数の個数: 48

約数和(自身を含む): 173238912

約数和(自身を除く): 92692252

約数列:

[1, 2, 4, 5, 10, 20, 71, 131, 142, 262, 284, 355, 433, 524, 655, 710, 866, 1310, 1420, 1732, 2165, 2620, 4330, 8660, 9301, 18602, 30743, 37204, 46505, 56723, 61486, 93010, 113446, 122972, 153715, 186020, 226892, 283615, 307430, 567230, 614860, 1134460, 4027333, 8054666, 16109332, 20136665, 40273330, 80546660]

約数ペア:

[(1, 80546660), (2, 40273330), (4, 20136665), (5, 16109332), (10, 8054666), (20, 4027333), (71, 1134460), (131, 614860), (142, 567230), (262, 307430), (284, 283615), (355, 226892), (433, 186020), (524, 153715), (655, 122972), (710, 113446), (866, 93010), (1310, 61486), (1420, 56723), (1732, 46505), (2165, 37204), (2620, 30743), (4330, 18602), (8660, 9301)]