21707940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{361799}}^1$

素因数の和:361811

約数の個数: 24

約数和(自身を含む): 60782400

約数和(自身を除く): 39074460

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 361799, 723598, 1085397, 1447196, 1808995, 2170794, 3617990, 4341588, 5426985, 7235980, 10853970, 21707940]

約数ペア:

[(1, 21707940), (2, 10853970), (3, 7235980), (4, 5426985), (5, 4341588), (6, 3617990), (10, 2170794), (12, 1808995), (15, 1447196), (20, 1085397), (30, 723598), (60, 361799)]