21572201

素因数分解:

$7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:126

約数の個数: 48

約数和(自身を含む): 29548800

約数和(自身を除く): 7976599

約数列:

[1, 7, 17, 19, 29, 47, 49, 119, 133, 203, 323, 329, 493, 551, 799, 833, 893, 931, 1363, 1421, 2261, 2303, 3451, 3857, 5593, 6251, 9367, 9541, 15181, 15827, 23171, 24157, 25897, 26999, 39151, 43757, 65569, 66787, 106267, 162197, 181279, 440249, 458983, 743869, 1135379, 1268953, 3081743, 21572201]

約数ペア:

[(1, 21572201), (7, 3081743), (17, 1268953), (19, 1135379), (29, 743869), (47, 458983), (49, 440249), (119, 181279), (133, 162197), (203, 106267), (323, 66787), (329, 65569), (493, 43757), (551, 39151), (799, 26999), (833, 25897), (893, 24157), (931, 23171), (1363, 15827), (1421, 15181), (2261, 9541), (2303, 9367), (3451, 6251), (3857, 5593)]