20438580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{340643}}^1$

素因数の和:340655

約数の個数: 24

約数和(自身を含む): 57228192

約数和(自身を除く): 36789612

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 340643, 681286, 1021929, 1362572, 1703215, 2043858, 3406430, 4087716, 5109645, 6812860, 10219290, 20438580]

約数ペア:

[(1, 20438580), (2, 10219290), (3, 6812860), (4, 5109645), (5, 4087716), (6, 3406430), (10, 2043858), (12, 1703215), (15, 1362572), (20, 1021929), (30, 681286), (60, 340643)]