18856640

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^2\times {\mathrm{487}}^1$

素因数の和:526

約数の個数: 84

約数和(自身を含む): 49456848

約数和(自身を除く): 30600208

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 121, 160, 176, 220, 242, 320, 352, 440, 484, 487, 605, 704, 880, 968, 974, 1210, 1760, 1936, 1948, 2420, 2435, 3520, 3872, 3896, 4840, 4870, 5357, 7744, 7792, 9680, 9740, 10714, 15584, 19360, 19480, 21428, 26785, 31168, 38720, 38960, 42856, 53570, 58927, 77920, 85712, 107140, 117854, 155840, 171424, 214280, 235708, 294635, 342848, 428560, 471416, 589270, 857120, 942832, 1178540, 1714240, 1885664, 2357080, 3771328, 4714160, 9428320, 18856640]

約数ペア:

[(1, 18856640), (2, 9428320), (4, 4714160), (5, 3771328), (8, 2357080), (10, 1885664), (11, 1714240), (16, 1178540), (20, 942832), (22, 857120), (32, 589270), (40, 471416), (44, 428560), (55, 342848), (64, 294635), (80, 235708), (88, 214280), (110, 171424), (121, 155840), (160, 117854), (176, 107140), (220, 85712), (242, 77920), (320, 58927), (352, 53570), (440, 42856), (484, 38960), (487, 38720), (605, 31168), (704, 26785), (880, 21428), (968, 19480), (974, 19360), (1210, 15584), (1760, 10714), (1936, 9740), (1948, 9680), (2420, 7792), (2435, 7744), (3520, 5357), (3872, 4870), (3896, 4840)]