217873780

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{122401}}^1$

素因数の和:122499

約数の個数: 24

約数和(自身を含む): 462679560

約数和(自身を除く): 244805780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 122401, 244802, 489604, 612005, 1224010, 2448020, 10893689, 21787378, 43574756, 54468445, 108936890, 217873780]

約数ペア:

[(1, 217873780), (2, 108936890), (4, 54468445), (5, 43574756), (10, 21787378), (20, 10893689), (89, 2448020), (178, 1224010), (356, 612005), (445, 489604), (890, 244802), (1780, 122401)]