21335013

素因数分解:

$3^2\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1871}}^1$

素因数の和:2065

約数の個数: 24

約数和(自身を含む): 35433216

約数和(自身を除く): 14098203

約数列:

[1, 3, 7, 9, 21, 63, 181, 543, 1267, 1629, 1871, 3801, 5613, 11403, 13097, 16839, 39291, 117873, 338651, 1015953, 2370557, 3047859, 7111671, 21335013]

約数ペア:

[(1, 21335013), (3, 7111671), (7, 3047859), (9, 2370557), (21, 1015953), (63, 338651), (181, 117873), (543, 39291), (1267, 16839), (1629, 13097), (1871, 11403), (3801, 5613)]