28039940

素因数分解:

$2^2\times 5^1\times {\mathrm{809}}^1\times {\mathrm{1733}}^1$

素因数の和:2551

約数の個数: 24

約数和(自身を含む): 58990680

約数和(自身を除く): 30950740

約数列:

[1, 2, 4, 5, 10, 20, 809, 1618, 1733, 3236, 3466, 4045, 6932, 8090, 8665, 16180, 17330, 34660, 1401997, 2803994, 5607988, 7009985, 14019970, 28039940]

約数ペア:

[(1, 28039940), (2, 14019970), (4, 7009985), (5, 5607988), (10, 2803994), (20, 1401997), (809, 34660), (1618, 17330), (1733, 16180), (3236, 8665), (3466, 8090), (4045, 6932)]