18722444

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{37}}^2\times {\mathrm{263}}^1$

素因数の和:354

約数の個数: 36

約数和(自身を含む): 36401904

約数和(自身を除く): 17679460

約数列:

[1, 2, 4, 13, 26, 37, 52, 74, 148, 263, 481, 526, 962, 1052, 1369, 1924, 2738, 3419, 5476, 6838, 9731, 13676, 17797, 19462, 35594, 38924, 71188, 126503, 253006, 360047, 506012, 720094, 1440188, 4680611, 9361222, 18722444]

約数ペア:

[(1, 18722444), (2, 9361222), (4, 4680611), (13, 1440188), (26, 720094), (37, 506012), (52, 360047), (74, 253006), (148, 126503), (263, 71188), (481, 38924), (526, 35594), (962, 19462), (1052, 17797), (1369, 13676), (1924, 9731), (2738, 6838), (3419, 5476)]