18201520

素因数分解:

$2^4\times 5^1\times {\mathrm{227519}}^1$

素因数の和:227532

約数の個数: 20

約数和(自身を含む): 42318720

約数和(自身を除く): 24117200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 227519, 455038, 910076, 1137595, 1820152, 2275190, 3640304, 4550380, 9100760, 18201520]

約数ペア:

[(1, 18201520), (2, 9100760), (4, 4550380), (5, 3640304), (8, 2275190), (10, 1820152), (16, 1137595), (20, 910076), (40, 455038), (80, 227519)]