1815880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4127}}^1$

素因数の和:4149

約数の個数: 32

約数和(自身を含む): 4458240

約数和(自身を除く): 2642360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 4127, 8254, 16508, 20635, 33016, 41270, 45397, 82540, 90794, 165080, 181588, 226985, 363176, 453970, 907940, 1815880]

約数ペア:

[(1, 1815880), (2, 907940), (4, 453970), (5, 363176), (8, 226985), (10, 181588), (11, 165080), (20, 90794), (22, 82540), (40, 45397), (44, 41270), (55, 33016), (88, 20635), (110, 16508), (220, 8254), (440, 4127)]