20571224

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{419}}^1$

素因数の和:480

約数の個数: 48

約数和(自身を含む): 43205400

約数和(自身を除く): 22634176

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 361, 419, 646, 722, 838, 1292, 1444, 1676, 2584, 2888, 3352, 6137, 7123, 7961, 12274, 14246, 15922, 24548, 28492, 31844, 49096, 56984, 63688, 135337, 151259, 270674, 302518, 541348, 605036, 1082696, 1210072, 2571403, 5142806, 10285612, 20571224]

約数ペア:

[(1, 20571224), (2, 10285612), (4, 5142806), (8, 2571403), (17, 1210072), (19, 1082696), (34, 605036), (38, 541348), (68, 302518), (76, 270674), (136, 151259), (152, 135337), (323, 63688), (361, 56984), (419, 49096), (646, 31844), (722, 28492), (838, 24548), (1292, 15922), (1444, 14246), (1676, 12274), (2584, 7961), (2888, 7123), (3352, 6137)]