20917952

素因数分解:

$2^6\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{691}}^1$

素因数の和:757

約数の個数: 56

約数和(自身を含む): 46402752

約数和(自身を除く): 25484800

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 43, 44, 64, 86, 88, 172, 176, 344, 352, 473, 688, 691, 704, 946, 1376, 1382, 1892, 2752, 2764, 3784, 5528, 7568, 7601, 11056, 15136, 15202, 22112, 29713, 30272, 30404, 44224, 59426, 60808, 118852, 121616, 237704, 243232, 326843, 475408, 486464, 653686, 950816, 1307372, 1901632, 2614744, 5229488, 10458976, 20917952]

約数ペア:

[(1, 20917952), (2, 10458976), (4, 5229488), (8, 2614744), (11, 1901632), (16, 1307372), (22, 950816), (32, 653686), (43, 486464), (44, 475408), (64, 326843), (86, 243232), (88, 237704), (172, 121616), (176, 118852), (344, 60808), (352, 59426), (473, 44224), (688, 30404), (691, 30272), (704, 29713), (946, 22112), (1376, 15202), (1382, 15136), (1892, 11056), (2752, 7601), (2764, 7568), (3784, 5528)]