87663890

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{66919}}^1$

素因数の和:67057

約数の個数: 16

約数和(自身を含む): 159001920

約数和(自身を除く): 71338030

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 66919, 133838, 334595, 669190, 8766389, 17532778, 43831945, 87663890]

約数ペア:

[(1, 87663890), (2, 43831945), (5, 17532778), (10, 8766389), (131, 669190), (262, 334595), (655, 133838), (1310, 66919)]