76561520

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{19531}}^1$

素因数の和:19558

約数の個数: 60

約数和(自身を含む): 207078264

約数和(自身を除く): 130516744

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 19531, 39062, 78124, 97655, 136717, 156248, 195310, 273434, 312496, 390620, 546868, 683585, 781240, 957019, 1093736, 1367170, 1562480, 1914038, 2187472, 2734340, 3828076, 4785095, 5468680, 7656152, 9570190, 10937360, 15312304, 19140380, 38280760, 76561520]

約数ペア:

[(1, 76561520), (2, 38280760), (4, 19140380), (5, 15312304), (7, 10937360), (8, 9570190), (10, 7656152), (14, 5468680), (16, 4785095), (20, 3828076), (28, 2734340), (35, 2187472), (40, 1914038), (49, 1562480), (56, 1367170), (70, 1093736), (80, 957019), (98, 781240), (112, 683585), (140, 546868), (196, 390620), (245, 312496), (280, 273434), (392, 195310), (490, 156248), (560, 136717), (784, 97655), (980, 78124), (1960, 39062), (3920, 19531)]