161891820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{811}}^1\times {\mathrm{1109}}^1$

素因数の和:1935

約数の個数: 72

約数和(自身を含む): 492120720

約数和(自身を除く): 330228900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 811, 1109, 1622, 2218, 2433, 3244, 3327, 4055, 4436, 4866, 5545, 6654, 7299, 8110, 9732, 9981, 11090, 12165, 13308, 14598, 16220, 16635, 19962, 22180, 24330, 29196, 33270, 36495, 39924, 48660, 49905, 66540, 72990, 99810, 145980, 199620, 899399, 1798798, 2698197, 3597596, 4496995, 5396394, 8094591, 8993990, 10792788, 13490985, 16189182, 17987980, 26981970, 32378364, 40472955, 53963940, 80945910, 161891820]

約数ペア:

[(1, 161891820), (2, 80945910), (3, 53963940), (4, 40472955), (5, 32378364), (6, 26981970), (9, 17987980), (10, 16189182), (12, 13490985), (15, 10792788), (18, 8993990), (20, 8094591), (30, 5396394), (36, 4496995), (45, 3597596), (60, 2698197), (90, 1798798), (180, 899399), (811, 199620), (1109, 145980), (1622, 99810), (2218, 72990), (2433, 66540), (3244, 49905), (3327, 48660), (4055, 39924), (4436, 36495), (4866, 33270), (5545, 29196), (6654, 24330), (7299, 22180), (8110, 19962), (9732, 16635), (9981, 16220), (11090, 14598), (12165, 13308)]