205399120

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{135131}}^1$

素因数の和:135163

約数の個数: 40

約数和(自身を含む): 502691040

約数和(自身を除く): 297291920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 135131, 270262, 540524, 675655, 1081048, 1351310, 2162096, 2567489, 2702620, 5134978, 5405240, 10269956, 10810480, 12837445, 20539912, 25674890, 41079824, 51349780, 102699560, 205399120]

約数ペア:

[(1, 205399120), (2, 102699560), (4, 51349780), (5, 41079824), (8, 25674890), (10, 20539912), (16, 12837445), (19, 10810480), (20, 10269956), (38, 5405240), (40, 5134978), (76, 2702620), (80, 2567489), (95, 2162096), (152, 1351310), (190, 1081048), (304, 675655), (380, 540524), (760, 270262), (1520, 135131)]