20212221

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{1627}}^1$

素因数の和:1772

約数の個数: 16

約数和(自身を含む): 27897408

約数和(自身を除く): 7685187

約数列:

[1, 3, 41, 101, 123, 303, 1627, 4141, 4881, 12423, 66707, 164327, 200121, 492981, 6737407, 20212221]

約数ペア:

[(1, 20212221), (3, 6737407), (41, 492981), (101, 200121), (123, 164327), (303, 66707), (1627, 12423), (4141, 4881)]