20961318

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{83}}^1\times {\mathrm{859}}^1$

素因数の和:961

約数の個数: 48

約数和(自身を含む): 49412160

約数和(自身を除く): 28450842

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 83, 98, 147, 166, 249, 294, 498, 581, 859, 1162, 1718, 1743, 2577, 3486, 4067, 5154, 6013, 8134, 12026, 12201, 18039, 24402, 36078, 42091, 71297, 84182, 126273, 142594, 213891, 252546, 427782, 499079, 998158, 1497237, 2994474, 3493553, 6987106, 10480659, 20961318]

約数ペア:

[(1, 20961318), (2, 10480659), (3, 6987106), (6, 3493553), (7, 2994474), (14, 1497237), (21, 998158), (42, 499079), (49, 427782), (83, 252546), (98, 213891), (147, 142594), (166, 126273), (249, 84182), (294, 71297), (498, 42091), (581, 36078), (859, 24402), (1162, 18039), (1718, 12201), (1743, 12026), (2577, 8134), (3486, 6013), (4067, 5154)]