20845552

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:270

約数の個数: 80

約数和(自身を含む): 50552320

約数和(自身を除く): 29706768

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 103, 104, 112, 139, 182, 206, 208, 278, 364, 412, 556, 721, 728, 824, 973, 1112, 1339, 1442, 1456, 1648, 1807, 1946, 2224, 2678, 2884, 3614, 3892, 5356, 5768, 7228, 7784, 9373, 10712, 11536, 12649, 14317, 14456, 15568, 18746, 21424, 25298, 28634, 28912, 37492, 50596, 57268, 74984, 100219, 101192, 114536, 149968, 186121, 200438, 202384, 229072, 372242, 400876, 744484, 801752, 1302847, 1488968, 1603504, 2605694, 2977936, 5211388, 10422776, 20845552]

約数ペア:

[(1, 20845552), (2, 10422776), (4, 5211388), (7, 2977936), (8, 2605694), (13, 1603504), (14, 1488968), (16, 1302847), (26, 801752), (28, 744484), (52, 400876), (56, 372242), (91, 229072), (103, 202384), (104, 200438), (112, 186121), (139, 149968), (182, 114536), (206, 101192), (208, 100219), (278, 74984), (364, 57268), (412, 50596), (556, 37492), (721, 28912), (728, 28634), (824, 25298), (973, 21424), (1112, 18746), (1339, 15568), (1442, 14456), (1456, 14317), (1648, 12649), (1807, 11536), (1946, 10712), (2224, 9373), (2678, 7784), (2884, 7228), (3614, 5768), (3892, 5356)]