21344380

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{9791}}^1$

素因数の和:9909

約数の個数: 24

約数和(自身を含む): 45239040

約数和(自身を除く): 23894660

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 9791, 19582, 39164, 48955, 97910, 195820, 1067219, 2134438, 4268876, 5336095, 10672190, 21344380]

約数ペア:

[(1, 21344380), (2, 10672190), (4, 5336095), (5, 4268876), (10, 2134438), (20, 1067219), (109, 195820), (218, 97910), (436, 48955), (545, 39164), (1090, 19582), (2180, 9791)]