19954576

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{40231}}^1$

素因数の和:40270

約数の個数: 20

約数和(自身を含む): 39910144

約数和(自身を除く): 19955568

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 40231, 80462, 160924, 321848, 643696, 1247161, 2494322, 4988644, 9977288, 19954576]

約数ペア:

[(1, 19954576), (2, 9977288), (4, 4988644), (8, 2494322), (16, 1247161), (31, 643696), (62, 321848), (124, 160924), (248, 80462), (496, 40231)]