128233640

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{31741}}^1$

素因数の和:31853

約数の個数: 32

約数和(自身を含む): 291391560

約数和(自身を除く): 163157920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 31741, 63482, 126964, 158705, 253928, 317410, 634820, 1269640, 3205841, 6411682, 12823364, 16029205, 25646728, 32058410, 64116820, 128233640]

約数ペア:

[(1, 128233640), (2, 64116820), (4, 32058410), (5, 25646728), (8, 16029205), (10, 12823364), (20, 6411682), (40, 3205841), (101, 1269640), (202, 634820), (404, 317410), (505, 253928), (808, 158705), (1010, 126964), (2020, 63482), (4040, 31741)]