21750320

素因数分解:

$2^4\times 5^1\times {\mathrm{271879}}^1$

素因数の和:271892

約数の個数: 20

約数和(自身を含む): 50569680

約数和(自身を除く): 28819360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271879, 543758, 1087516, 1359395, 2175032, 2718790, 4350064, 5437580, 10875160, 21750320]

約数ペア:

[(1, 21750320), (2, 10875160), (4, 5437580), (5, 4350064), (8, 2718790), (10, 2175032), (16, 1359395), (20, 1087516), (40, 543758), (80, 271879)]