20160945

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2207}}^1$

素因数の和:2254

約数の個数: 48

約数和(自身を含む): 41333760

約数和(自身を除く): 21172815

約数列:

[1, 3, 5, 7, 9, 15, 21, 29, 35, 45, 63, 87, 105, 145, 203, 261, 315, 435, 609, 1015, 1305, 1827, 2207, 3045, 6621, 9135, 11035, 15449, 19863, 33105, 46347, 64003, 77245, 99315, 139041, 192009, 231735, 320015, 448021, 576027, 695205, 960045, 1344063, 2240105, 2880135, 4032189, 6720315, 20160945]

約数ペア:

[(1, 20160945), (3, 6720315), (5, 4032189), (7, 2880135), (9, 2240105), (15, 1344063), (21, 960045), (29, 695205), (35, 576027), (45, 448021), (63, 320015), (87, 231735), (105, 192009), (145, 139041), (203, 99315), (261, 77245), (315, 64003), (435, 46347), (609, 33105), (1015, 19863), (1305, 15449), (1827, 11035), (2207, 9135), (3045, 6621)]