64720180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{66041}}^1$

素因数の和:66064

約数の個数: 36

約数和(自身を含む): 158104548

約数和(自身を除く): 93384368

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 66041, 132082, 264164, 330205, 462287, 660410, 924574, 1320820, 1849148, 2311435, 3236009, 4622870, 6472018, 9245740, 12944036, 16180045, 32360090, 64720180]

約数ペア:

[(1, 64720180), (2, 32360090), (4, 16180045), (5, 12944036), (7, 9245740), (10, 6472018), (14, 4622870), (20, 3236009), (28, 2311435), (35, 1849148), (49, 1320820), (70, 924574), (98, 660410), (140, 462287), (196, 330205), (245, 264164), (490, 132082), (980, 66041)]