81668620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:263

約数の個数: 96

約数和(自身を含む): 196116480

約数和(自身を除く): 114447860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 79, 110, 127, 148, 158, 185, 220, 254, 316, 370, 395, 407, 508, 635, 740, 790, 814, 869, 1270, 1397, 1580, 1628, 1738, 2035, 2540, 2794, 2923, 3476, 4070, 4345, 4699, 5588, 5846, 6985, 8140, 8690, 9398, 10033, 11692, 13970, 14615, 17380, 18796, 20066, 23495, 27940, 29230, 32153, 40132, 46990, 50165, 51689, 58460, 64306, 93980, 100330, 103378, 110363, 128612, 160765, 200660, 206756, 220726, 258445, 321530, 371221, 441452, 516890, 551815, 643060, 742442, 1033780, 1103630, 1484884, 1856105, 2207260, 3712210, 4083431, 7424420, 8166862, 16333724, 20417155, 40834310, 81668620]

約数ペア:

[(1, 81668620), (2, 40834310), (4, 20417155), (5, 16333724), (10, 8166862), (11, 7424420), (20, 4083431), (22, 3712210), (37, 2207260), (44, 1856105), (55, 1484884), (74, 1103630), (79, 1033780), (110, 742442), (127, 643060), (148, 551815), (158, 516890), (185, 441452), (220, 371221), (254, 321530), (316, 258445), (370, 220726), (395, 206756), (407, 200660), (508, 160765), (635, 128612), (740, 110363), (790, 103378), (814, 100330), (869, 93980), (1270, 64306), (1397, 58460), (1580, 51689), (1628, 50165), (1738, 46990), (2035, 40132), (2540, 32153), (2794, 29230), (2923, 27940), (3476, 23495), (4070, 20066), (4345, 18796), (4699, 17380), (5588, 14615), (5846, 13970), (6985, 11692), (8140, 10033), (8690, 9398)]