18990412

素因数分解:

$2^2\times 7^1\times {\mathrm{678229}}^1$

素因数の和:678240

約数の個数: 12

約数和(自身を含む): 37980880

約数和(自身を除く): 18990468

約数列:

[1, 2, 4, 7, 14, 28, 678229, 1356458, 2712916, 4747603, 9495206, 18990412]

約数ペア:

[(1, 18990412), (2, 9495206), (4, 4747603), (7, 2712916), (14, 1356458), (28, 678229)]