18467920

素因数分解:

$2^4\times 5^1\times {\mathrm{230849}}^1$

素因数の和:230862

約数の個数: 20

約数和(自身を含む): 42938100

約数和(自身を除く): 24470180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 230849, 461698, 923396, 1154245, 1846792, 2308490, 3693584, 4616980, 9233960, 18467920]

約数ペア:

[(1, 18467920), (2, 9233960), (4, 4616980), (5, 3693584), (8, 2308490), (10, 1846792), (16, 1154245), (20, 923396), (40, 461698), (80, 230849)]