21385360

素因数分解:

$2^4\times 5^1\times {\mathrm{267317}}^1$

素因数の和:267330

約数の個数: 20

約数和(自身を含む): 49721148

約数和(自身を除く): 28335788

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 267317, 534634, 1069268, 1336585, 2138536, 2673170, 4277072, 5346340, 10692680, 21385360]

約数ペア:

[(1, 21385360), (2, 10692680), (4, 5346340), (5, 4277072), (8, 2673170), (10, 2138536), (16, 1336585), (20, 1069268), (40, 534634), (80, 267317)]