21742270

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:241

約数の個数: 64

約数和(自身を含む): 45826560

約数和(自身を除く): 24084290

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 101, 103, 110, 190, 202, 206, 209, 418, 505, 515, 1010, 1030, 1045, 1111, 1133, 1919, 1957, 2090, 2222, 2266, 3838, 3914, 5555, 5665, 9595, 9785, 10403, 11110, 11330, 19190, 19570, 20806, 21109, 21527, 42218, 43054, 52015, 104030, 105545, 107635, 114433, 197657, 211090, 215270, 228866, 395314, 572165, 988285, 1144330, 1976570, 2174227, 4348454, 10871135, 21742270]

約数ペア:

[(1, 21742270), (2, 10871135), (5, 4348454), (10, 2174227), (11, 1976570), (19, 1144330), (22, 988285), (38, 572165), (55, 395314), (95, 228866), (101, 215270), (103, 211090), (110, 197657), (190, 114433), (202, 107635), (206, 105545), (209, 104030), (418, 52015), (505, 43054), (515, 42218), (1010, 21527), (1030, 21109), (1045, 20806), (1111, 19570), (1133, 19190), (1919, 11330), (1957, 11110), (2090, 10403), (2222, 9785), (2266, 9595), (3838, 5665), (3914, 5555)]