388610020

素因数分解:

$2^2\times 5^1\times {\mathrm{19430501}}^1$

素因数の和:19430510

約数の個数: 12

約数和(自身を含む): 816081084

約数和(自身を除く): 427471064

約数列:

[1, 2, 4, 5, 10, 20, 19430501, 38861002, 77722004, 97152505, 194305010, 388610020]

約数ペア:

[(1, 388610020), (2, 194305010), (4, 97152505), (5, 77722004), (10, 38861002), (20, 19430501)]