18919845

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{20021}}^1$

素因数の和:20042

約数の個数: 32

約数和(自身を含む): 38442240

約数和(自身を除く): 19522395

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 20021, 60063, 100105, 140147, 180189, 300315, 420441, 540567, 700735, 900945, 1261323, 2102205, 2702835, 3783969, 6306615, 18919845]

約数ペア:

[(1, 18919845), (3, 6306615), (5, 3783969), (7, 2702835), (9, 2102205), (15, 1261323), (21, 900945), (27, 700735), (35, 540567), (45, 420441), (63, 300315), (105, 180189), (135, 140147), (189, 100105), (315, 60063), (945, 20021)]