20718374404

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{779707}}^1$

素因数の和:779804

約数の個数: 48

約数和(自身を含む): 45235539328

約数和(自身を除く): 24517164924

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 73, 91, 146, 182, 292, 364, 511, 949, 1022, 1898, 2044, 3796, 6643, 13286, 26572, 779707, 1559414, 3118828, 5457949, 10136191, 10915898, 20272382, 21831796, 40544764, 56918611, 70953337, 113837222, 141906674, 227674444, 283813348, 398430277, 739941943, 796860554, 1479883886, 1593721108, 2959767772, 5179593601, 10359187202, 20718374404]

約数ペア:

[(1, 20718374404), (2, 10359187202), (4, 5179593601), (7, 2959767772), (13, 1593721108), (14, 1479883886), (26, 796860554), (28, 739941943), (52, 398430277), (73, 283813348), (91, 227674444), (146, 141906674), (182, 113837222), (292, 70953337), (364, 56918611), (511, 40544764), (949, 21831796), (1022, 20272382), (1898, 10915898), (2044, 10136191), (3796, 5457949), (6643, 3118828), (13286, 1559414), (26572, 779707)]