21873705

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{5081}}^1$

素因数の和:5137

約数の個数: 32

約数和(自身を含む): 40981248

約数和(自身を除く): 19107543

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 105, 123, 205, 287, 615, 861, 1435, 4305, 5081, 15243, 25405, 35567, 76215, 106701, 177835, 208321, 533505, 624963, 1041605, 1458247, 3124815, 4374741, 7291235, 21873705]

約数ペア:

[(1, 21873705), (3, 7291235), (5, 4374741), (7, 3124815), (15, 1458247), (21, 1041605), (35, 624963), (41, 533505), (105, 208321), (123, 177835), (205, 106701), (287, 76215), (615, 35567), (861, 25405), (1435, 15243), (4305, 5081)]