21396242

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{11491}}^1$

素因数の和:11526

約数の個数: 24

約数和(自身を含む): 39302640

約数和(自身を除く): 17906398

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 931, 1862, 11491, 22982, 80437, 160874, 218329, 436658, 563059, 1126118, 1528303, 3056606, 10698121, 21396242]

約数ペア:

[(1, 21396242), (2, 10698121), (7, 3056606), (14, 1528303), (19, 1126118), (38, 563059), (49, 436658), (98, 218329), (133, 160874), (266, 80437), (931, 22982), (1862, 11491)]