21201213

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{6361}}^1$

素因数の和:6476

約数の個数: 16

約数和(自身を含む): 31148352

約数和(自身を除く): 9947139

約数列:

[1, 3, 11, 33, 101, 303, 1111, 3333, 6361, 19083, 69971, 209913, 642461, 1927383, 7067071, 21201213]

約数ペア:

[(1, 21201213), (3, 7067071), (11, 1927383), (33, 642461), (101, 209913), (303, 69971), (1111, 19083), (3333, 6361)]