20411872

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{353}}^1$

素因数の和:515

約数の個数: 48

約数和(自身を含む): 43711920

約数和(自身を除く): 23300048

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 139, 208, 278, 353, 416, 556, 706, 1112, 1412, 1807, 2224, 2824, 3614, 4448, 4589, 5648, 7228, 9178, 11296, 14456, 18356, 28912, 36712, 49067, 57824, 73424, 98134, 146848, 196268, 392536, 637871, 785072, 1275742, 1570144, 2551484, 5102968, 10205936, 20411872]

約数ペア:

[(1, 20411872), (2, 10205936), (4, 5102968), (8, 2551484), (13, 1570144), (16, 1275742), (26, 785072), (32, 637871), (52, 392536), (104, 196268), (139, 146848), (208, 98134), (278, 73424), (353, 57824), (416, 49067), (556, 36712), (706, 28912), (1112, 18356), (1412, 14456), (1807, 11296), (2224, 9178), (2824, 7228), (3614, 5648), (4448, 4589)]