21507346

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{3929}}^1$

素因数の和:3978

約数の個数: 32

約数和(自身を含む): 40746240

約数和(自身を除く): 19238894

約数列:

[1, 2, 7, 14, 17, 23, 34, 46, 119, 161, 238, 322, 391, 782, 2737, 3929, 5474, 7858, 27503, 55006, 66793, 90367, 133586, 180734, 467551, 632569, 935102, 1265138, 1536239, 3072478, 10753673, 21507346]

約数ペア:

[(1, 21507346), (2, 10753673), (7, 3072478), (14, 1536239), (17, 1265138), (23, 935102), (34, 632569), (46, 467551), (119, 180734), (161, 133586), (238, 90367), (322, 66793), (391, 55006), (782, 27503), (2737, 7858), (3929, 5474)]