28305820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{74489}}^1$

素因数の和:74517

約数の個数: 24

約数和(自身を含む): 62571600

約数和(自身を除く): 34265780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 74489, 148978, 297956, 372445, 744890, 1415291, 1489780, 2830582, 5661164, 7076455, 14152910, 28305820]

約数ペア:

[(1, 28305820), (2, 14152910), (4, 7076455), (5, 5661164), (10, 2830582), (19, 1489780), (20, 1415291), (38, 744890), (76, 372445), (95, 297956), (190, 148978), (380, 74489)]