18000388

素因数分解:

$2^2\times 7^1\times {\mathrm{642871}}^1$

素因数の和:642882

約数の個数: 12

約数和(自身を含む): 36000832

約数和(自身を除く): 18000444

約数列:

[1, 2, 4, 7, 14, 28, 642871, 1285742, 2571484, 4500097, 9000194, 18000388]

約数ペア:

[(1, 18000388), (2, 9000194), (4, 4500097), (7, 2571484), (14, 1285742), (28, 642871)]