18720284

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{401}}^1\times {\mathrm{1061}}^1$

素因数の和:1477

約数の個数: 24

約数和(自身を含む): 35861616

約数和(自身を除く): 17141332

約数列:

[1, 2, 4, 11, 22, 44, 401, 802, 1061, 1604, 2122, 4244, 4411, 8822, 11671, 17644, 23342, 46684, 425461, 850922, 1701844, 4680071, 9360142, 18720284]

約数ペア:

[(1, 18720284), (2, 9360142), (4, 4680071), (11, 1701844), (22, 850922), (44, 425461), (401, 46684), (802, 23342), (1061, 17644), (1604, 11671), (2122, 8822), (4244, 4411)]