20001124

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{479}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 41771520

約数和(自身を除く): 21770396

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 73, 143, 146, 286, 292, 479, 572, 803, 949, 958, 1606, 1898, 1916, 3212, 3796, 5269, 6227, 10439, 10538, 12454, 20878, 21076, 24908, 34967, 41756, 68497, 69934, 136994, 139868, 273988, 384637, 454571, 769274, 909142, 1538548, 1818284, 5000281, 10000562, 20001124]

約数ペア:

[(1, 20001124), (2, 10000562), (4, 5000281), (11, 1818284), (13, 1538548), (22, 909142), (26, 769274), (44, 454571), (52, 384637), (73, 273988), (143, 139868), (146, 136994), (286, 69934), (292, 68497), (479, 41756), (572, 34967), (803, 24908), (949, 21076), (958, 20878), (1606, 12454), (1898, 10538), (1916, 10439), (3212, 6227), (3796, 5269)]