20438940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{340649}}^1$

素因数の和:340661

約数の個数: 24

約数和(自身を含む): 57229200

約数和(自身を除く): 36790260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 340649, 681298, 1021947, 1362596, 1703245, 2043894, 3406490, 4087788, 5109735, 6812980, 10219470, 20438940]

約数ペア:

[(1, 20438940), (2, 10219470), (3, 6812980), (4, 5109735), (5, 4087788), (6, 3406490), (10, 2043894), (12, 1703245), (15, 1362596), (20, 1021947), (30, 681298), (60, 340649)]