18538760

素因数分解:

$2^3\times 5^1\times {\mathrm{359}}^1\times {\mathrm{1291}}^1$

素因数の和:1661

約数の個数: 32

約数和(自身を含む): 41860800

約数和(自身を除く): 23322040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 359, 718, 1291, 1436, 1795, 2582, 2872, 3590, 5164, 6455, 7180, 10328, 12910, 14360, 25820, 51640, 463469, 926938, 1853876, 2317345, 3707752, 4634690, 9269380, 18538760]

約数ペア:

[(1, 18538760), (2, 9269380), (4, 4634690), (5, 3707752), (8, 2317345), (10, 1853876), (20, 926938), (40, 463469), (359, 51640), (718, 25820), (1291, 14360), (1436, 12910), (1795, 10328), (2582, 7180), (2872, 6455), (3590, 5164)]