18205124420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{505979}}^1$

素因数の和:506252

約数の個数: 48

約数和(自身を含む): 43862394240

約数和(自身を除く): 25657269820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 257, 514, 1028, 1285, 1799, 2570, 3598, 5140, 7196, 8995, 17990, 35980, 505979, 1011958, 2023916, 2529895, 3541853, 5059790, 7083706, 10119580, 14167412, 17709265, 35418530, 70837060, 130036603, 260073206, 520146412, 650183015, 910256221, 1300366030, 1820512442, 2600732060, 3641024884, 4551281105, 9102562210, 18205124420]

約数ペア:

[(1, 18205124420), (2, 9102562210), (4, 4551281105), (5, 3641024884), (7, 2600732060), (10, 1820512442), (14, 1300366030), (20, 910256221), (28, 650183015), (35, 520146412), (70, 260073206), (140, 130036603), (257, 70837060), (514, 35418530), (1028, 17709265), (1285, 14167412), (1799, 10119580), (2570, 7083706), (3598, 5059790), (5140, 3541853), (7196, 2529895), (8995, 2023916), (17990, 1011958), (35980, 505979)]