21790844

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:230

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 20121796

約数列:

[1, 2, 4, 23, 41, 46, 53, 82, 92, 106, 109, 164, 212, 218, 436, 943, 1219, 1886, 2173, 2438, 2507, 3772, 4346, 4469, 4876, 5014, 5777, 8692, 8938, 10028, 11554, 17876, 23108, 49979, 99958, 102787, 132871, 199916, 205574, 236857, 265742, 411148, 473714, 531484, 947428, 5447711, 10895422, 21790844]

約数ペア:

[(1, 21790844), (2, 10895422), (4, 5447711), (23, 947428), (41, 531484), (46, 473714), (53, 411148), (82, 265742), (92, 236857), (106, 205574), (109, 199916), (164, 132871), (212, 102787), (218, 99958), (436, 49979), (943, 23108), (1219, 17876), (1886, 11554), (2173, 10028), (2438, 8938), (2507, 8692), (3772, 5777), (4346, 5014), (4469, 4876)]