21830780

素因数分解:

$2^2\times 5^1\times {\mathrm{839}}^1\times {\mathrm{1301}}^1$

素因数の和:2149

約数の個数: 24

約数和(自身を含む): 45934560

約数和(自身を除く): 24103780

約数列:

[1, 2, 4, 5, 10, 20, 839, 1301, 1678, 2602, 3356, 4195, 5204, 6505, 8390, 13010, 16780, 26020, 1091539, 2183078, 4366156, 5457695, 10915390, 21830780]

約数ペア:

[(1, 21830780), (2, 10915390), (4, 5457695), (5, 4366156), (10, 2183078), (20, 1091539), (839, 26020), (1301, 16780), (1678, 13010), (2602, 8390), (3356, 6505), (4195, 5204)]