21397222

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{863}}^1$

素因数の和:913

約数の個数: 48

約数和(自身を含む): 42550272

約数和(自身を除く): 21153050

約数列:

[1, 2, 7, 11, 14, 22, 23, 46, 49, 77, 98, 154, 161, 253, 322, 506, 539, 863, 1078, 1127, 1726, 1771, 2254, 3542, 6041, 9493, 12082, 12397, 18986, 19849, 24794, 39698, 42287, 66451, 84574, 132902, 138943, 218339, 277886, 436678, 465157, 930314, 972601, 1528373, 1945202, 3056746, 10698611, 21397222]

約数ペア:

[(1, 21397222), (2, 10698611), (7, 3056746), (11, 1945202), (14, 1528373), (22, 972601), (23, 930314), (46, 465157), (49, 436678), (77, 277886), (98, 218339), (154, 138943), (161, 132902), (253, 84574), (322, 66451), (506, 42287), (539, 39698), (863, 24794), (1078, 19849), (1127, 18986), (1726, 12397), (1771, 12082), (2254, 9493), (3542, 6041)]