260038420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{1051}}^1$

素因数の和:1288

約数の個数: 48

約数和(自身を含む): 556718400

約数和(自身を除く): 296679980

約数列:

[1, 2, 4, 5, 10, 20, 89, 139, 178, 278, 356, 445, 556, 695, 890, 1051, 1390, 1780, 2102, 2780, 4204, 5255, 10510, 12371, 21020, 24742, 49484, 61855, 93539, 123710, 146089, 187078, 247420, 292178, 374156, 467695, 584356, 730445, 935390, 1460890, 1870780, 2921780, 13001921, 26003842, 52007684, 65009605, 130019210, 260038420]

約数ペア:

[(1, 260038420), (2, 130019210), (4, 65009605), (5, 52007684), (10, 26003842), (20, 13001921), (89, 2921780), (139, 1870780), (178, 1460890), (278, 935390), (356, 730445), (445, 584356), (556, 467695), (695, 374156), (890, 292178), (1051, 247420), (1390, 187078), (1780, 146089), (2102, 123710), (2780, 93539), (4204, 61855), (5255, 49484), (10510, 24742), (12371, 21020)]