1668665020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{257}}^1\times {\mathrm{2683}}^1$

素因数の和:2971

約数の個数: 72

約数和(自身を含む): 3868148592

約数和(自身を除く): 2199483572

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 257, 484, 514, 605, 1028, 1210, 1285, 2420, 2570, 2683, 2827, 5140, 5366, 5654, 10732, 11308, 13415, 14135, 26830, 28270, 29513, 31097, 53660, 56540, 59026, 62194, 118052, 124388, 147565, 155485, 295130, 310970, 324643, 590260, 621940, 649286, 689531, 1298572, 1379062, 1623215, 2758124, 3246430, 3447655, 6492860, 6895310, 7584841, 13790620, 15169682, 30339364, 37924205, 75848410, 83433251, 151696820, 166866502, 333733004, 417166255, 834332510, 1668665020]

約数ペア:

[(1, 1668665020), (2, 834332510), (4, 417166255), (5, 333733004), (10, 166866502), (11, 151696820), (20, 83433251), (22, 75848410), (44, 37924205), (55, 30339364), (110, 15169682), (121, 13790620), (220, 7584841), (242, 6895310), (257, 6492860), (484, 3447655), (514, 3246430), (605, 2758124), (1028, 1623215), (1210, 1379062), (1285, 1298572), (2420, 689531), (2570, 649286), (2683, 621940), (2827, 590260), (5140, 324643), (5366, 310970), (5654, 295130), (10732, 155485), (11308, 147565), (13415, 124388), (14135, 118052), (26830, 62194), (28270, 59026), (29513, 56540), (31097, 53660)]