19495180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13729}}^1$

素因数の和:13809

約数の個数: 24

約数和(自身を含む): 41519520

約数和(自身を除く): 22024340

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 13729, 27458, 54916, 68645, 137290, 274580, 974759, 1949518, 3899036, 4873795, 9747590, 19495180]

約数ペア:

[(1, 19495180), (2, 9747590), (4, 4873795), (5, 3899036), (10, 1949518), (20, 974759), (71, 274580), (142, 137290), (284, 68645), (355, 54916), (710, 27458), (1420, 13729)]