21145446

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{257}}^1\times {\mathrm{653}}^1$

素因数の和:925

約数の個数: 48

約数和(自身を含む): 52644384

約数和(自身を除く): 31498938

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 257, 514, 653, 771, 1306, 1542, 1799, 1959, 2313, 3598, 3918, 4571, 4626, 5397, 5877, 9142, 10794, 11754, 13713, 16191, 27426, 32382, 41139, 82278, 167821, 335642, 503463, 1006926, 1174747, 1510389, 2349494, 3020778, 3524241, 7048482, 10572723, 21145446]

約数ペア:

[(1, 21145446), (2, 10572723), (3, 7048482), (6, 3524241), (7, 3020778), (9, 2349494), (14, 1510389), (18, 1174747), (21, 1006926), (42, 503463), (63, 335642), (126, 167821), (257, 82278), (514, 41139), (653, 32382), (771, 27426), (1306, 16191), (1542, 13713), (1799, 11754), (1959, 10794), (2313, 9142), (3598, 5877), (3918, 5397), (4571, 4626)]