19518736

素因数分解:

$2^4\times {\mathrm{991}}^1\times {\mathrm{1231}}^1$

素因数の和:2230

約数の個数: 20

約数和(自身を含む): 37886464

約数和(自身を除く): 18367728

約数列:

[1, 2, 4, 8, 16, 991, 1231, 1982, 2462, 3964, 4924, 7928, 9848, 15856, 19696, 1219921, 2439842, 4879684, 9759368, 19518736]

約数ペア:

[(1, 19518736), (2, 9759368), (4, 4879684), (8, 2439842), (16, 1219921), (991, 19696), (1231, 15856), (1982, 9848), (2462, 7928), (3964, 4924)]