20702964380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{479}}^1\times {\mathrm{308723}}^1$

素因数の和:309218

約数の個数: 48

約数和(自身を含む): 49791006720

約数和(自身を除く): 29088042340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 479, 958, 1916, 2395, 3353, 4790, 6706, 9580, 13412, 16765, 33530, 67060, 308723, 617446, 1234892, 1543615, 2161061, 3087230, 4322122, 6174460, 8644244, 10805305, 21610610, 43221220, 147878317, 295756634, 591513268, 739391585, 1035148219, 1478783170, 2070296438, 2957566340, 4140592876, 5175741095, 10351482190, 20702964380]

約数ペア:

[(1, 20702964380), (2, 10351482190), (4, 5175741095), (5, 4140592876), (7, 2957566340), (10, 2070296438), (14, 1478783170), (20, 1035148219), (28, 739391585), (35, 591513268), (70, 295756634), (140, 147878317), (479, 43221220), (958, 21610610), (1916, 10805305), (2395, 8644244), (3353, 6174460), (4790, 4322122), (6706, 3087230), (9580, 2161061), (13412, 1543615), (16765, 1234892), (33530, 617446), (67060, 308723)]