18981567

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{809}}^1$

素因数の和:908

約数の個数: 32

約数和(自身を含む): 31104000

約数和(自身を除く): 12122433

約数列:

[1, 3, 9, 11, 27, 33, 79, 99, 237, 297, 711, 809, 869, 2133, 2427, 2607, 7281, 7821, 8899, 21843, 23463, 26697, 63911, 80091, 191733, 240273, 575199, 703021, 1725597, 2109063, 6327189, 18981567]

約数ペア:

[(1, 18981567), (3, 6327189), (9, 2109063), (11, 1725597), (27, 703021), (33, 575199), (79, 240273), (99, 191733), (237, 80091), (297, 63911), (711, 26697), (809, 23463), (869, 21843), (2133, 8899), (2427, 7821), (2607, 7281)]