21110817

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{11047}}^1$

素因数の和:11077

約数の個数: 24

約数和(自身を含む): 35265216

約数和(自身を除く): 14154399

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 11047, 33141, 77329, 143611, 231987, 430833, 541303, 1005277, 1623909, 3015831, 7036939, 21110817]

約数ペア:

[(1, 21110817), (3, 7036939), (7, 3015831), (13, 1623909), (21, 1005277), (39, 541303), (49, 430833), (91, 231987), (147, 143611), (273, 77329), (637, 33141), (1911, 11047)]