20340243

素因数分解:

$3^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{599}}^1$

素因数の和:637

約数の個数: 48

約数和(自身を含む): 37440000

約数和(自身を除く): 17099757

約数列:

[1, 3, 7, 9, 11, 21, 33, 49, 63, 77, 99, 147, 231, 343, 441, 539, 599, 693, 1029, 1617, 1797, 3087, 3773, 4193, 4851, 5391, 6589, 11319, 12579, 19767, 29351, 33957, 37737, 46123, 59301, 88053, 138369, 205457, 264159, 322861, 415107, 616371, 968583, 1849113, 2260027, 2905749, 6780081, 20340243]

約数ペア:

[(1, 20340243), (3, 6780081), (7, 2905749), (9, 2260027), (11, 1849113), (21, 968583), (33, 616371), (49, 415107), (63, 322861), (77, 264159), (99, 205457), (147, 138369), (231, 88053), (343, 59301), (441, 46123), (539, 37737), (599, 33957), (693, 29351), (1029, 19767), (1617, 12579), (1797, 11319), (3087, 6589), (3773, 5391), (4193, 4851)]