19748407

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1\times {\mathrm{631}}^1$

素因数の和:918

約数の個数: 16

約数和(自身を含む): 24026112

約数和(自身を除く): 4277705

約数列:

[1, 7, 17, 119, 263, 631, 1841, 4417, 4471, 10727, 31297, 75089, 165953, 1161671, 2821201, 19748407]

約数ペア:

[(1, 19748407), (7, 2821201), (17, 1161671), (119, 165953), (263, 75089), (631, 31297), (1841, 10727), (4417, 4471)]