20910780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{179}}^1$

素因数の和:264

約数の個数: 144

約数和(自身を含む): 70761600

約数和(自身を除く): 49850820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 59, 60, 66, 90, 99, 110, 118, 132, 165, 177, 179, 180, 198, 220, 236, 295, 330, 354, 358, 396, 495, 531, 537, 590, 649, 660, 708, 716, 885, 895, 990, 1062, 1074, 1180, 1298, 1611, 1770, 1790, 1947, 1969, 1980, 2124, 2148, 2596, 2655, 2685, 3222, 3245, 3540, 3580, 3894, 3938, 5310, 5370, 5841, 5907, 6444, 6490, 7788, 7876, 8055, 9735, 9845, 10561, 10620, 10740, 11682, 11814, 12980, 16110, 17721, 19470, 19690, 21122, 23364, 23628, 29205, 29535, 31683, 32220, 35442, 38940, 39380, 42244, 52805, 58410, 59070, 63366, 70884, 88605, 95049, 105610, 116171, 116820, 118140, 126732, 158415, 177210, 190098, 211220, 232342, 316830, 348513, 354420, 380196, 464684, 475245, 580855, 633660, 697026, 950490, 1045539, 1161710, 1394052, 1742565, 1900980, 2091078, 2323420, 3485130, 4182156, 5227695, 6970260, 10455390, 20910780]

約数ペア:

[(1, 20910780), (2, 10455390), (3, 6970260), (4, 5227695), (5, 4182156), (6, 3485130), (9, 2323420), (10, 2091078), (11, 1900980), (12, 1742565), (15, 1394052), (18, 1161710), (20, 1045539), (22, 950490), (30, 697026), (33, 633660), (36, 580855), (44, 475245), (45, 464684), (55, 380196), (59, 354420), (60, 348513), (66, 316830), (90, 232342), (99, 211220), (110, 190098), (118, 177210), (132, 158415), (165, 126732), (177, 118140), (179, 116820), (180, 116171), (198, 105610), (220, 95049), (236, 88605), (295, 70884), (330, 63366), (354, 59070), (358, 58410), (396, 52805), (495, 42244), (531, 39380), (537, 38940), (590, 35442), (649, 32220), (660, 31683), (708, 29535), (716, 29205), (885, 23628), (895, 23364), (990, 21122), (1062, 19690), (1074, 19470), (1180, 17721), (1298, 16110), (1611, 12980), (1770, 11814), (1790, 11682), (1947, 10740), (1969, 10620), (1980, 10561), (2124, 9845), (2148, 9735), (2596, 8055), (2655, 7876), (2685, 7788), (3222, 6490), (3245, 6444), (3540, 5907), (3580, 5841), (3894, 5370), (3938, 5310)]