19814615

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{4007}}^1$

素因数の和:4078

約数の個数: 16

約数和(自身を含む): 25394688

約数和(自身を除く): 5580073

約数列:

[1, 5, 23, 43, 115, 215, 989, 4007, 4945, 20035, 92161, 172301, 460805, 861505, 3962923, 19814615]

約数ペア:

[(1, 19814615), (5, 3962923), (23, 861505), (43, 460805), (115, 172301), (215, 92161), (989, 20035), (4007, 4945)]