21641235

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{457}}^1$

素因数の和:524

約数の個数: 64

約数和(自身を含む): 44319744

約数和(自身を除く): 22678509

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 41, 55, 77, 105, 123, 165, 205, 231, 287, 385, 451, 457, 615, 861, 1155, 1353, 1371, 1435, 2255, 2285, 3157, 3199, 4305, 5027, 6765, 6855, 9471, 9597, 15081, 15785, 15995, 18737, 25135, 35189, 47355, 47985, 56211, 75405, 93685, 105567, 131159, 175945, 206107, 281055, 393477, 527835, 618321, 655795, 1030535, 1442749, 1967385, 3091605, 4328247, 7213745, 21641235]

約数ペア:

[(1, 21641235), (3, 7213745), (5, 4328247), (7, 3091605), (11, 1967385), (15, 1442749), (21, 1030535), (33, 655795), (35, 618321), (41, 527835), (55, 393477), (77, 281055), (105, 206107), (123, 175945), (165, 131159), (205, 105567), (231, 93685), (287, 75405), (385, 56211), (451, 47985), (457, 47355), (615, 35189), (861, 25135), (1155, 18737), (1353, 15995), (1371, 15785), (1435, 15081), (2255, 9597), (2285, 9471), (3157, 6855), (3199, 6765), (4305, 5027)]