1281980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{9157}}^1$

素因数の和:9173

約数の個数: 24

約数和(自身を含む): 3077088

約数和(自身を除く): 1795108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 9157, 18314, 36628, 45785, 64099, 91570, 128198, 183140, 256396, 320495, 640990, 1281980]

約数ペア:

[(1, 1281980), (2, 640990), (4, 320495), (5, 256396), (7, 183140), (10, 128198), (14, 91570), (20, 64099), (28, 45785), (35, 36628), (70, 18314), (140, 9157)]