20981942

素因数分解:

$2^1\times {\mathrm{101}}^1\times {\mathrm{241}}^1\times {\mathrm{431}}^1$

素因数の和:775

約数の個数: 16

約数和(自身を含む): 31990464

約数和(自身を除く): 11008522

約数列:

[1, 2, 101, 202, 241, 431, 482, 862, 24341, 43531, 48682, 87062, 103871, 207742, 10490971, 20981942]

約数ペア:

[(1, 20981942), (2, 10490971), (101, 207742), (202, 103871), (241, 87062), (431, 48682), (482, 43531), (862, 24341)]