78750280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{281251}}^1$

素因数の和:281269

約数の個数: 32

約数和(自身を含む): 202501440

約数和(自身を除く): 123751160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 281251, 562502, 1125004, 1406255, 1968757, 2250008, 2812510, 3937514, 5625020, 7875028, 9843785, 11250040, 15750056, 19687570, 39375140, 78750280]

約数ペア:

[(1, 78750280), (2, 39375140), (4, 19687570), (5, 15750056), (7, 11250040), (8, 9843785), (10, 7875028), (14, 5625020), (20, 3937514), (28, 2812510), (35, 2250008), (40, 1968757), (56, 1406255), (70, 1125004), (140, 562502), (280, 281251)]