205419080

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1\times {\mathrm{683}}^1$

素因数の和:870

約数の個数: 64

約数和(自身を含む): 473765760

約数和(自身を除く): 268346680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 103, 146, 206, 292, 365, 412, 515, 584, 683, 730, 824, 1030, 1366, 1460, 2060, 2732, 2920, 3415, 4120, 5464, 6830, 7519, 13660, 15038, 27320, 30076, 37595, 49859, 60152, 70349, 75190, 99718, 140698, 150380, 199436, 249295, 281396, 300760, 351745, 398872, 498590, 562792, 703490, 997180, 1406980, 1994360, 2813960, 5135477, 10270954, 20541908, 25677385, 41083816, 51354770, 102709540, 205419080]

約数ペア:

[(1, 205419080), (2, 102709540), (4, 51354770), (5, 41083816), (8, 25677385), (10, 20541908), (20, 10270954), (40, 5135477), (73, 2813960), (103, 1994360), (146, 1406980), (206, 997180), (292, 703490), (365, 562792), (412, 498590), (515, 398872), (584, 351745), (683, 300760), (730, 281396), (824, 249295), (1030, 199436), (1366, 150380), (1460, 140698), (2060, 99718), (2732, 75190), (2920, 70349), (3415, 60152), (4120, 49859), (5464, 37595), (6830, 30076), (7519, 27320), (13660, 15038)]