21369243

素因数分解:

$3^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{1093}}^1$

素因数の和:1136

約数の個数: 32

約数和(自身を含む): 35008000

約数和(自身を除く): 13638757

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 343, 399, 931, 1029, 1093, 2793, 3279, 6517, 7651, 19551, 20767, 22953, 53557, 62301, 145369, 160671, 374899, 436107, 1017583, 1124697, 3052749, 7123081, 21369243]

約数ペア:

[(1, 21369243), (3, 7123081), (7, 3052749), (19, 1124697), (21, 1017583), (49, 436107), (57, 374899), (133, 160671), (147, 145369), (343, 62301), (399, 53557), (931, 22953), (1029, 20767), (1093, 19551), (2793, 7651), (3279, 6517)]