21226863

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1607}}^1$

素因数の和:1671

約数の個数: 32

約数和(自身を含む): 35195904

約数和(自身を除く): 13969041

約数列:

[1, 3, 7, 17, 21, 37, 51, 111, 119, 259, 357, 629, 777, 1607, 1887, 4403, 4821, 11249, 13209, 27319, 33747, 59459, 81957, 178377, 191233, 416213, 573699, 1010803, 1248639, 3032409, 7075621, 21226863]

約数ペア:

[(1, 21226863), (3, 7075621), (7, 3032409), (17, 1248639), (21, 1010803), (37, 573699), (51, 416213), (111, 191233), (119, 178377), (259, 81957), (357, 59459), (629, 33747), (777, 27319), (1607, 13209), (1887, 11249), (4403, 4821)]