18478719

素因数分解:

$3^3\times 7^1\times {\mathrm{97771}}^1$

素因数の和:97787

約数の個数: 16

約数和(自身を含む): 31287040

約数和(自身を除く): 12808321

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 97771, 293313, 684397, 879939, 2053191, 2639817, 6159573, 18478719]

約数ペア:

[(1, 18478719), (3, 6159573), (7, 2639817), (9, 2053191), (21, 879939), (27, 684397), (63, 293313), (189, 97771)]