21506936

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{677}}^1$

素因数の和:732

約数の個数: 48

約数和(自身を含む): 46497240

約数和(自身を除く): 24990304

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 361, 418, 677, 722, 836, 1354, 1444, 1672, 2708, 2888, 3971, 5416, 7447, 7942, 12863, 14894, 15884, 25726, 29788, 31768, 51452, 59576, 102904, 141493, 244397, 282986, 488794, 565972, 977588, 1131944, 1955176, 2688367, 5376734, 10753468, 21506936]

約数ペア:

[(1, 21506936), (2, 10753468), (4, 5376734), (8, 2688367), (11, 1955176), (19, 1131944), (22, 977588), (38, 565972), (44, 488794), (76, 282986), (88, 244397), (152, 141493), (209, 102904), (361, 59576), (418, 51452), (677, 31768), (722, 29788), (836, 25726), (1354, 15884), (1444, 14894), (1672, 12863), (2708, 7942), (2888, 7447), (3971, 5416)]