19947736

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{67391}}^1$

素因数の和:67434

約数の個数: 16

約数和(自身を含む): 38413440

約数和(自身を除く): 18465704

約数列:

[1, 2, 4, 8, 37, 74, 148, 296, 67391, 134782, 269564, 539128, 2493467, 4986934, 9973868, 19947736]

約数ペア:

[(1, 19947736), (2, 9973868), (4, 4986934), (8, 2493467), (37, 539128), (74, 269564), (148, 134782), (296, 67391)]