20018990

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{69031}}^1$

素因数の和:69067

約数の個数: 16

約数和(自身を含む): 37277280

約数和(自身を除く): 17258290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 69031, 138062, 345155, 690310, 2001899, 4003798, 10009495, 20018990]

約数ペア:

[(1, 20018990), (2, 10009495), (5, 4003798), (10, 2001899), (29, 690310), (58, 345155), (145, 138062), (290, 69031)]