21799940

素因数分解:

$2^2\times 5^1\times {\mathrm{947}}^1\times {\mathrm{1151}}^1$

素因数の和:2107

約数の個数: 24

約数和(自身を含む): 45868032

約数和(自身を除く): 24068092

約数列:

[1, 2, 4, 5, 10, 20, 947, 1151, 1894, 2302, 3788, 4604, 4735, 5755, 9470, 11510, 18940, 23020, 1089997, 2179994, 4359988, 5449985, 10899970, 21799940]

約数ペア:

[(1, 21799940), (2, 10899970), (4, 5449985), (5, 4359988), (10, 2179994), (20, 1089997), (947, 23020), (1151, 18940), (1894, 11510), (2302, 9470), (3788, 5755), (4604, 4735)]