19989868

素因数分解:

$2^2\times {\mathrm{139}}^1\times {\mathrm{157}}^1\times {\mathrm{229}}^1$

素因数の和:529

約数の個数: 24

約数和(自身を含む): 35613200

約数和(自身を除く): 15623332

約数列:

[1, 2, 4, 139, 157, 229, 278, 314, 458, 556, 628, 916, 21823, 31831, 35953, 43646, 63662, 71906, 87292, 127324, 143812, 4997467, 9994934, 19989868]

約数ペア:

[(1, 19989868), (2, 9994934), (4, 4997467), (139, 143812), (157, 127324), (229, 87292), (278, 71906), (314, 63662), (458, 43646), (556, 35953), (628, 31831), (916, 21823)]