21384080

素因数分解:

$2^4\times 5^1\times {\mathrm{267301}}^1$

素因数の和:267314

約数の個数: 20

約数和(自身を含む): 49718172

約数和(自身を除く): 28334092

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 267301, 534602, 1069204, 1336505, 2138408, 2673010, 4276816, 5346020, 10692040, 21384080]

約数ペア:

[(1, 21384080), (2, 10692040), (4, 5346020), (5, 4276816), (8, 2673010), (10, 2138408), (16, 1336505), (20, 1069204), (40, 534602), (80, 267301)]