21200778819

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{4721}}^1\times {\mathrm{45361}}^1$

素因数の和:50099

約数の個数: 24

約数和(自身を含む): 33415100784

約数和(自身を除く): 12214321965

約数列:

[1, 3, 9, 11, 33, 99, 4721, 14163, 42489, 45361, 51931, 136083, 155793, 408249, 467379, 498971, 1496913, 4490739, 214149281, 642447843, 1927343529, 2355642091, 7066926273, 21200778819]

約数ペア:

[(1, 21200778819), (3, 7066926273), (9, 2355642091), (11, 1927343529), (33, 642447843), (99, 214149281), (4721, 4490739), (14163, 1496913), (42489, 498971), (45361, 467379), (51931, 408249), (136083, 155793)]