21553672

素因数分解:

$2^3\times 7^1\times {\mathrm{557}}^1\times {\mathrm{691}}^1$

素因数の和:1261

約数の個数: 32

約数和(自身を含む): 46336320

約数和(自身を除く): 24782648

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 557, 691, 1114, 1382, 2228, 2764, 3899, 4456, 4837, 5528, 7798, 9674, 15596, 19348, 31192, 38696, 384887, 769774, 1539548, 2694209, 3079096, 5388418, 10776836, 21553672]

約数ペア:

[(1, 21553672), (2, 10776836), (4, 5388418), (7, 3079096), (8, 2694209), (14, 1539548), (28, 769774), (56, 384887), (557, 38696), (691, 31192), (1114, 19348), (1382, 15596), (2228, 9674), (2764, 7798), (3899, 5528), (4456, 4837)]