19689010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2521}}^1$

素因数の和:2610

約数の個数: 32

約数和(自身を含む): 39222144

約数和(自身を除く): 19533134

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 355, 710, 781, 1562, 2521, 3905, 5042, 7810, 12605, 25210, 27731, 55462, 138655, 178991, 277310, 357982, 894955, 1789910, 1968901, 3937802, 9844505, 19689010]

約数ペア:

[(1, 19689010), (2, 9844505), (5, 3937802), (10, 1968901), (11, 1789910), (22, 894955), (55, 357982), (71, 277310), (110, 178991), (142, 138655), (355, 55462), (710, 27731), (781, 25210), (1562, 12605), (2521, 7810), (3905, 5042)]