20865033

素因数分解:

$3^4\times 7^3\times {\mathrm{751}}^1$

素因数の和:784

約数の個数: 40

約数和(自身を含む): 36396800

約数和(自身を除く): 15531767

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 343, 441, 567, 751, 1029, 1323, 2253, 3087, 3969, 5257, 6759, 9261, 15771, 20277, 27783, 36799, 47313, 60831, 110397, 141939, 257593, 331191, 425817, 772779, 993573, 2318337, 2980719, 6955011, 20865033]

約数ペア:

[(1, 20865033), (3, 6955011), (7, 2980719), (9, 2318337), (21, 993573), (27, 772779), (49, 425817), (63, 331191), (81, 257593), (147, 141939), (189, 110397), (343, 60831), (441, 47313), (567, 36799), (751, 27783), (1029, 20277), (1323, 15771), (2253, 9261), (3087, 6759), (3969, 5257)]