18940328

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2131}}^1$

素因数の和:2249

約数の個数: 32

約数和(自身を含む): 39143520

約数和(自身を除く): 20203192

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 101, 202, 404, 808, 1111, 2131, 2222, 4262, 4444, 8524, 8888, 17048, 23441, 46882, 93764, 187528, 215231, 430462, 860924, 1721848, 2367541, 4735082, 9470164, 18940328]

約数ペア:

[(1, 18940328), (2, 9470164), (4, 4735082), (8, 2367541), (11, 1721848), (22, 860924), (44, 430462), (88, 215231), (101, 187528), (202, 93764), (404, 46882), (808, 23441), (1111, 17048), (2131, 8888), (2222, 8524), (4262, 4444)]