28684840

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{7393}}^1$

素因数の和:7501

約数の個数: 32

約数和(自身を含む): 65215080

約数和(自身を除く): 36530240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 7393, 14786, 29572, 36965, 59144, 73930, 147860, 295720, 717121, 1434242, 2868484, 3585605, 5736968, 7171210, 14342420, 28684840]

約数ペア:

[(1, 28684840), (2, 14342420), (4, 7171210), (5, 5736968), (8, 3585605), (10, 2868484), (20, 1434242), (40, 717121), (97, 295720), (194, 147860), (388, 73930), (485, 59144), (776, 36965), (970, 29572), (1940, 14786), (3880, 7393)]