21226408

素因数分解:

$2^3\times 7^2\times {\mathrm{173}}^1\times {\mathrm{313}}^1$

素因数の和:506

約数の個数: 48

約数和(自身を含む): 46713780

約数和(自身を除く): 25487372

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 173, 196, 313, 346, 392, 626, 692, 1211, 1252, 1384, 2191, 2422, 2504, 4382, 4844, 8477, 8764, 9688, 15337, 16954, 17528, 30674, 33908, 54149, 61348, 67816, 108298, 122696, 216596, 379043, 433192, 758086, 1516172, 2653301, 3032344, 5306602, 10613204, 21226408]

約数ペア:

[(1, 21226408), (2, 10613204), (4, 5306602), (7, 3032344), (8, 2653301), (14, 1516172), (28, 758086), (49, 433192), (56, 379043), (98, 216596), (173, 122696), (196, 108298), (313, 67816), (346, 61348), (392, 54149), (626, 33908), (692, 30674), (1211, 17528), (1252, 16954), (1384, 15337), (2191, 9688), (2422, 8764), (2504, 8477), (4382, 4844)]