19885512208

素因数分解:

$2^4\times {\mathrm{3109}}^1\times {\mathrm{399757}}^1$

素因数の和:402874

約数の個数: 20

約数和(自身を含む): 38540668780

約数和(自身を除く): 18655156572

約数列:

[1, 2, 4, 8, 16, 3109, 6218, 12436, 24872, 49744, 399757, 799514, 1599028, 3198056, 6396112, 1242844513, 2485689026, 4971378052, 9942756104, 19885512208]

約数ペア:

[(1, 19885512208), (2, 9942756104), (4, 4971378052), (8, 2485689026), (16, 1242844513), (3109, 6396112), (6218, 3198056), (12436, 1599028), (24872, 799514), (49744, 399757)]