21079756

素因数分解:

$2^2\times {\mathrm{59}}^1\times {\mathrm{179}}^1\times {\mathrm{499}}^1$

素因数の和:741

約数の個数: 24

約数和(自身を含む): 37800000

約数和(自身を除く): 16720244

約数列:

[1, 2, 4, 59, 118, 179, 236, 358, 499, 716, 998, 1996, 10561, 21122, 29441, 42244, 58882, 89321, 117764, 178642, 357284, 5269939, 10539878, 21079756]

約数ペア:

[(1, 21079756), (2, 10539878), (4, 5269939), (59, 357284), (118, 178642), (179, 117764), (236, 89321), (358, 58882), (499, 42244), (716, 29441), (998, 21122), (1996, 10561)]