21447909

素因数分解:

$3^8\times 7^1\times {\mathrm{467}}^1$

素因数の和:498

約数の個数: 36

約数和(自身を含む): 36844704

約数和(自身を除く): 15396795

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 467, 567, 729, 1401, 1701, 2187, 3269, 4203, 5103, 6561, 9807, 12609, 15309, 29421, 37827, 45927, 88263, 113481, 264789, 340443, 794367, 1021329, 2383101, 3063987, 7149303, 21447909]

約数ペア:

[(1, 21447909), (3, 7149303), (7, 3063987), (9, 2383101), (21, 1021329), (27, 794367), (63, 340443), (81, 264789), (189, 113481), (243, 88263), (467, 45927), (567, 37827), (729, 29421), (1401, 15309), (1701, 12609), (2187, 9807), (3269, 6561), (4203, 5103)]