18807940

素因数分解:

$2^2\times 5^1\times {\mathrm{487}}^1\times {\mathrm{1931}}^1$

素因数の和:2427

約数の個数: 24

約数和(自身を含む): 39598272

約数和(自身を除く): 20790332

約数列:

[1, 2, 4, 5, 10, 20, 487, 974, 1931, 1948, 2435, 3862, 4870, 7724, 9655, 9740, 19310, 38620, 940397, 1880794, 3761588, 4701985, 9403970, 18807940]

約数ペア:

[(1, 18807940), (2, 9403970), (4, 4701985), (5, 3761588), (10, 1880794), (20, 940397), (487, 38620), (974, 19310), (1931, 9740), (1948, 9655), (2435, 7724), (3862, 4870)]