21372351

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{647}}^1$

素因数の和:692

約数の個数: 48

約数和(自身を含む): 38610432

約数和(自身を除く): 17238081

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 121, 143, 231, 273, 363, 429, 647, 847, 1001, 1573, 1941, 2541, 3003, 4529, 4719, 7117, 8411, 11011, 13587, 21351, 25233, 33033, 49819, 58877, 78287, 92521, 149457, 176631, 234861, 277563, 548009, 647647, 1017731, 1644027, 1942941, 3053193, 7124117, 21372351]

約数ペア:

[(1, 21372351), (3, 7124117), (7, 3053193), (11, 1942941), (13, 1644027), (21, 1017731), (33, 647647), (39, 548009), (77, 277563), (91, 234861), (121, 176631), (143, 149457), (231, 92521), (273, 78287), (363, 58877), (429, 49819), (647, 33033), (847, 25233), (1001, 21351), (1573, 13587), (1941, 11011), (2541, 8411), (3003, 7117), (4529, 4719)]