19615940

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{7487}}^1$

素因数の和:7627

約数の個数: 24

約数和(自身を含む): 41513472

約数和(自身を除く): 21897532

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 7487, 14974, 29948, 37435, 74870, 149740, 980797, 1961594, 3923188, 4903985, 9807970, 19615940]

約数ペア:

[(1, 19615940), (2, 9807970), (4, 4903985), (5, 3923188), (10, 1961594), (20, 980797), (131, 149740), (262, 74870), (524, 37435), (655, 29948), (1310, 14974), (2620, 7487)]