20577249

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1291}}^1$

素因数の和:1338

約数の個数: 48

約数和(自身を含む): 38697984

約数和(自身を除く): 18120735

約数列:

[1, 3, 7, 9, 11, 21, 23, 33, 63, 69, 77, 99, 161, 207, 231, 253, 483, 693, 759, 1291, 1449, 1771, 2277, 3873, 5313, 9037, 11619, 14201, 15939, 27111, 29693, 42603, 81333, 89079, 99407, 127809, 207851, 267237, 298221, 326623, 623553, 894663, 979869, 1870659, 2286361, 2939607, 6859083, 20577249]

約数ペア:

[(1, 20577249), (3, 6859083), (7, 2939607), (9, 2286361), (11, 1870659), (21, 979869), (23, 894663), (33, 623553), (63, 326623), (69, 298221), (77, 267237), (99, 207851), (161, 127809), (207, 99407), (231, 89079), (253, 81333), (483, 42603), (693, 29693), (759, 27111), (1291, 15939), (1449, 14201), (1771, 11619), (2277, 9037), (3873, 5313)]