18810272

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{439}}^1$

素因数の和:565

約数の個数: 48

約数和(自身を含む): 40360320

約数和(自身を除く): 21550048

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 103, 104, 206, 208, 412, 416, 439, 824, 878, 1339, 1648, 1756, 2678, 3296, 3512, 5356, 5707, 7024, 10712, 11414, 14048, 21424, 22828, 42848, 45217, 45656, 90434, 91312, 180868, 182624, 361736, 587821, 723472, 1175642, 1446944, 2351284, 4702568, 9405136, 18810272]

約数ペア:

[(1, 18810272), (2, 9405136), (4, 4702568), (8, 2351284), (13, 1446944), (16, 1175642), (26, 723472), (32, 587821), (52, 361736), (103, 182624), (104, 180868), (206, 91312), (208, 90434), (412, 45656), (416, 45217), (439, 42848), (824, 22828), (878, 21424), (1339, 14048), (1648, 11414), (1756, 10712), (2678, 7024), (3296, 5707), (3512, 5356)]