20900494

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{12791}}^1$

素因数の和:12855

約数の個数: 16

約数和(自身を含む): 33770880

約数和(自身を除く): 12870386

約数列:

[1, 2, 19, 38, 43, 86, 817, 1634, 12791, 25582, 243029, 486058, 550013, 1100026, 10450247, 20900494]

約数ペア:

[(1, 20900494), (2, 10450247), (19, 1100026), (38, 550013), (43, 486058), (86, 243029), (817, 25582), (1634, 12791)]