21402854

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{51203}}^1$

素因数の和:51235

約数の個数: 16

約数和(自身を含む): 36866880

約数和(自身を除く): 15464026

約数列:

[1, 2, 11, 19, 22, 38, 209, 418, 51203, 102406, 563233, 972857, 1126466, 1945714, 10701427, 21402854]

約数ペア:

[(1, 21402854), (2, 10701427), (11, 1945714), (19, 1126466), (22, 972857), (38, 563233), (209, 102406), (418, 51203)]