21590940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51407}}^1$

素因数の和:51426

約数の個数: 48

約数和(自身を含む): 69092352

約数和(自身を除く): 47501412

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 51407, 102814, 154221, 205628, 257035, 308442, 359849, 514070, 616884, 719698, 771105, 1028140, 1079547, 1439396, 1542210, 1799245, 2159094, 3084420, 3598490, 4318188, 5397735, 7196980, 10795470, 21590940]

約数ペア:

[(1, 21590940), (2, 10795470), (3, 7196980), (4, 5397735), (5, 4318188), (6, 3598490), (7, 3084420), (10, 2159094), (12, 1799245), (14, 1542210), (15, 1439396), (20, 1079547), (21, 1028140), (28, 771105), (30, 719698), (35, 616884), (42, 514070), (60, 359849), (70, 308442), (84, 257035), (105, 205628), (140, 154221), (210, 102814), (420, 51407)]