20943538

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:199

約数の個数: 64

約数和(自身を含む): 41803776

約数和(自身を除く): 20860238

約数列:

[1, 2, 7, 11, 14, 22, 31, 41, 62, 77, 82, 107, 154, 214, 217, 287, 341, 434, 451, 574, 682, 749, 902, 1177, 1271, 1498, 2354, 2387, 2542, 3157, 3317, 4387, 4774, 6314, 6634, 8239, 8774, 8897, 13981, 16478, 17794, 23219, 27962, 30709, 36487, 46438, 48257, 61418, 72974, 96514, 97867, 135997, 195734, 255409, 271994, 337799, 510818, 675598, 951979, 1495967, 1903958, 2991934, 10471769, 20943538]

約数ペア:

[(1, 20943538), (2, 10471769), (7, 2991934), (11, 1903958), (14, 1495967), (22, 951979), (31, 675598), (41, 510818), (62, 337799), (77, 271994), (82, 255409), (107, 195734), (154, 135997), (214, 97867), (217, 96514), (287, 72974), (341, 61418), (434, 48257), (451, 46438), (574, 36487), (682, 30709), (749, 27962), (902, 23219), (1177, 17794), (1271, 16478), (1498, 13981), (2354, 8897), (2387, 8774), (2542, 8239), (3157, 6634), (3317, 6314), (4387, 4774)]