20499885

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{1033}}^1$

素因数の和:1064

約数の個数: 60

約数和(自身を含む): 42788988

約数和(自身を除く): 22289103

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 49, 63, 81, 105, 135, 147, 189, 245, 315, 405, 441, 567, 735, 945, 1033, 1323, 2205, 2835, 3099, 3969, 5165, 6615, 7231, 9297, 15495, 19845, 21693, 27891, 36155, 46485, 50617, 65079, 83673, 108465, 139455, 151851, 195237, 253085, 325395, 418365, 455553, 585711, 759255, 976185, 1366659, 2277765, 2928555, 4099977, 6833295, 20499885]

約数ペア:

[(1, 20499885), (3, 6833295), (5, 4099977), (7, 2928555), (9, 2277765), (15, 1366659), (21, 976185), (27, 759255), (35, 585711), (45, 455553), (49, 418365), (63, 325395), (81, 253085), (105, 195237), (135, 151851), (147, 139455), (189, 108465), (245, 83673), (315, 65079), (405, 50617), (441, 46485), (567, 36155), (735, 27891), (945, 21693), (1033, 19845), (1323, 15495), (2205, 9297), (2835, 7231), (3099, 6615), (3969, 5165)]