18711980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{133657}}^1$

素因数の和:133673

約数の個数: 24

約数和(自身を含む): 44909088

約数和(自身を除く): 26197108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 133657, 267314, 534628, 668285, 935599, 1336570, 1871198, 2673140, 3742396, 4677995, 9355990, 18711980]

約数ペア:

[(1, 18711980), (2, 9355990), (4, 4677995), (5, 3742396), (7, 2673140), (10, 1871198), (14, 1336570), (20, 935599), (28, 668285), (35, 534628), (70, 267314), (140, 133657)]