21818860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{155849}}^1$

素因数の和:155865

約数の個数: 24

約数和(自身を含む): 52365600

約数和(自身を除く): 30546740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 155849, 311698, 623396, 779245, 1090943, 1558490, 2181886, 3116980, 4363772, 5454715, 10909430, 21818860]

約数ペア:

[(1, 21818860), (2, 10909430), (4, 5454715), (5, 4363772), (7, 3116980), (10, 2181886), (14, 1558490), (20, 1090943), (28, 779245), (35, 623396), (70, 311698), (140, 155849)]