128307956

素因数分解:

$2^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{20549}}^1$

素因数の和:20783

約数の個数: 24

約数和(自身を含む): 257779200

約数和(自身を除く): 129471244

約数列:

[1, 2, 4, 7, 14, 28, 223, 446, 892, 1561, 3122, 6244, 20549, 41098, 82196, 143843, 287686, 575372, 4582427, 9164854, 18329708, 32076989, 64153978, 128307956]

約数ペア:

[(1, 128307956), (2, 64153978), (4, 32076989), (7, 18329708), (14, 9164854), (28, 4582427), (223, 575372), (446, 287686), (892, 143843), (1561, 82196), (3122, 41098), (6244, 20549)]