21981376

素因数分解:

$2^6\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:281

約数の個数: 56

約数和(自身を含む): 46268640

約数和(自身を除く): 24287264

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 64, 92, 109, 137, 184, 218, 274, 368, 436, 548, 736, 872, 1096, 1472, 1744, 2192, 2507, 3151, 3488, 4384, 5014, 6302, 6976, 8768, 10028, 12604, 14933, 20056, 25208, 29866, 40112, 50416, 59732, 80224, 100832, 119464, 160448, 201664, 238928, 343459, 477856, 686918, 955712, 1373836, 2747672, 5495344, 10990688, 21981376]

約数ペア:

[(1, 21981376), (2, 10990688), (4, 5495344), (8, 2747672), (16, 1373836), (23, 955712), (32, 686918), (46, 477856), (64, 343459), (92, 238928), (109, 201664), (137, 160448), (184, 119464), (218, 100832), (274, 80224), (368, 59732), (436, 50416), (548, 40112), (736, 29866), (872, 25208), (1096, 20056), (1472, 14933), (1744, 12604), (2192, 10028), (2507, 8768), (3151, 6976), (3488, 6302), (4384, 5014)]