20400149

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{11519}}^1$

素因数の和:11560

約数の個数: 16

約数和(自身を含む): 26542080

約数和(自身を除く): 6141931

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 11519, 80633, 126709, 264937, 886963, 1854559, 2914307, 20400149]

約数ペア:

[(1, 20400149), (7, 2914307), (11, 1854559), (23, 886963), (77, 264937), (161, 126709), (253, 80633), (1771, 11519)]