20690978

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{113}}^1$

素因数の和:203

約数の個数: 64

約数和(自身を含む): 41368320

約数和(自身を除く): 20677342

約数列:

[1, 2, 7, 11, 14, 22, 29, 41, 58, 77, 82, 113, 154, 203, 226, 287, 319, 406, 451, 574, 638, 791, 902, 1189, 1243, 1582, 2233, 2378, 2486, 3157, 3277, 4466, 4633, 6314, 6554, 8323, 8701, 9266, 13079, 16646, 17402, 22939, 26158, 32431, 36047, 45878, 50963, 64862, 72094, 91553, 101926, 134357, 183106, 252329, 268714, 356741, 504658, 713482, 940499, 1477927, 1880998, 2955854, 10345489, 20690978]

約数ペア:

[(1, 20690978), (2, 10345489), (7, 2955854), (11, 1880998), (14, 1477927), (22, 940499), (29, 713482), (41, 504658), (58, 356741), (77, 268714), (82, 252329), (113, 183106), (154, 134357), (203, 101926), (226, 91553), (287, 72094), (319, 64862), (406, 50963), (451, 45878), (574, 36047), (638, 32431), (791, 26158), (902, 22939), (1189, 17402), (1243, 16646), (1582, 13079), (2233, 9266), (2378, 8701), (2486, 8323), (3157, 6554), (3277, 6314), (4466, 4633)]