21564543

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 39739392

約数和(自身を除く): 18174849

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 43, 77, 91, 129, 143, 167, 231, 273, 301, 429, 473, 501, 559, 903, 1001, 1169, 1419, 1677, 1837, 2171, 3003, 3311, 3507, 3913, 5511, 6149, 6513, 7181, 9933, 11739, 12859, 15197, 18447, 21543, 23881, 38577, 43043, 45591, 50267, 71643, 78991, 93353, 129129, 150801, 167167, 236973, 280059, 501501, 552937, 653471, 1026883, 1658811, 1960413, 3080649, 7188181, 21564543]

約数ペア:

[(1, 21564543), (3, 7188181), (7, 3080649), (11, 1960413), (13, 1658811), (21, 1026883), (33, 653471), (39, 552937), (43, 501501), (77, 280059), (91, 236973), (129, 167167), (143, 150801), (167, 129129), (231, 93353), (273, 78991), (301, 71643), (429, 50267), (473, 45591), (501, 43043), (559, 38577), (903, 23881), (1001, 21543), (1169, 18447), (1419, 15197), (1677, 12859), (1837, 11739), (2171, 9933), (3003, 7181), (3311, 6513), (3507, 6149), (3913, 5511)]