20517776

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{241}}^1\times {\mathrm{313}}^1$

素因数の和:579

約数の個数: 40

約数和(自身を含む): 42401304

約数和(自身を除く): 21883528

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 241, 272, 313, 482, 626, 964, 1252, 1928, 2504, 3856, 4097, 5008, 5321, 8194, 10642, 16388, 21284, 32776, 42568, 65552, 75433, 85136, 150866, 301732, 603464, 1206928, 1282361, 2564722, 5129444, 10258888, 20517776]

約数ペア:

[(1, 20517776), (2, 10258888), (4, 5129444), (8, 2564722), (16, 1282361), (17, 1206928), (34, 603464), (68, 301732), (136, 150866), (241, 85136), (272, 75433), (313, 65552), (482, 42568), (626, 32776), (964, 21284), (1252, 16388), (1928, 10642), (2504, 8194), (3856, 5321), (4097, 5008)]