18939820

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{2861}}^1$

素因数の和:3201

約数の個数: 24

約数和(自身を含む): 39907728

約数和(自身を除く): 20967908

約数列:

[1, 2, 4, 5, 10, 20, 331, 662, 1324, 1655, 2861, 3310, 5722, 6620, 11444, 14305, 28610, 57220, 946991, 1893982, 3787964, 4734955, 9469910, 18939820]

約数ペア:

[(1, 18939820), (2, 9469910), (4, 4734955), (5, 3787964), (10, 1893982), (20, 946991), (331, 57220), (662, 28610), (1324, 14305), (1655, 11444), (2861, 6620), (3310, 5722)]