19108540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{86857}}^1$

素因数の和:86877

約数の個数: 24

約数和(自身を含む): 43776432

約数和(自身を除く): 24667892

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 86857, 173714, 347428, 434285, 868570, 955427, 1737140, 1910854, 3821708, 4777135, 9554270, 19108540]

約数ペア:

[(1, 19108540), (2, 9554270), (4, 4777135), (5, 3821708), (10, 1910854), (11, 1737140), (20, 955427), (22, 868570), (44, 434285), (55, 347428), (110, 173714), (220, 86857)]