20831580

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1$

素因数の和:206

約数の個数: 240

約数和(自身を含む): 81962496

約数和(自身を除く): 61130916

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 27, 28, 30, 33, 35, 36, 42, 44, 45, 54, 55, 60, 63, 66, 70, 77, 81, 84, 90, 99, 105, 108, 110, 126, 132, 135, 140, 154, 162, 165, 167, 180, 189, 198, 210, 220, 231, 252, 270, 297, 308, 315, 324, 330, 334, 378, 385, 396, 405, 420, 462, 495, 501, 540, 567, 594, 630, 660, 668, 693, 756, 770, 810, 835, 891, 924, 945, 990, 1002, 1134, 1155, 1169, 1188, 1260, 1386, 1485, 1503, 1540, 1620, 1670, 1782, 1837, 1890, 1980, 2004, 2079, 2268, 2310, 2338, 2505, 2772, 2835, 2970, 3006, 3340, 3465, 3507, 3564, 3674, 3780, 4158, 4455, 4509, 4620, 4676, 5010, 5511, 5670, 5845, 5940, 6012, 6237, 6930, 7014, 7348, 7515, 8316, 8910, 9018, 9185, 10020, 10395, 10521, 11022, 11340, 11690, 12474, 12859, 13527, 13860, 14028, 15030, 16533, 17535, 17820, 18036, 18370, 20790, 21042, 22044, 22545, 23380, 24948, 25718, 27054, 27555, 30060, 31185, 31563, 33066, 35070, 36740, 38577, 41580, 42084, 45090, 49599, 51436, 52605, 54108, 55110, 62370, 63126, 64295, 66132, 67635, 70140, 77154, 82665, 90180, 94689, 99198, 105210, 110220, 115731, 124740, 126252, 128590, 135270, 148797, 154308, 157815, 165330, 189378, 192885, 198396, 210420, 231462, 247995, 257180, 270540, 297594, 315630, 330660, 347193, 378756, 385770, 462924, 473445, 495990, 578655, 595188, 631260, 694386, 743985, 771540, 946890, 991980, 1041579, 1157310, 1388772, 1487970, 1735965, 1893780, 2083158, 2314620, 2975940, 3471930, 4166316, 5207895, 6943860, 10415790, 20831580]

約数ペア:

[(1, 20831580), (2, 10415790), (3, 6943860), (4, 5207895), (5, 4166316), (6, 3471930), (7, 2975940), (9, 2314620), (10, 2083158), (11, 1893780), (12, 1735965), (14, 1487970), (15, 1388772), (18, 1157310), (20, 1041579), (21, 991980), (22, 946890), (27, 771540), (28, 743985), (30, 694386), (33, 631260), (35, 595188), (36, 578655), (42, 495990), (44, 473445), (45, 462924), (54, 385770), (55, 378756), (60, 347193), (63, 330660), (66, 315630), (70, 297594), (77, 270540), (81, 257180), (84, 247995), (90, 231462), (99, 210420), (105, 198396), (108, 192885), (110, 189378), (126, 165330), (132, 157815), (135, 154308), (140, 148797), (154, 135270), (162, 128590), (165, 126252), (167, 124740), (180, 115731), (189, 110220), (198, 105210), (210, 99198), (220, 94689), (231, 90180), (252, 82665), (270, 77154), (297, 70140), (308, 67635), (315, 66132), (324, 64295), (330, 63126), (334, 62370), (378, 55110), (385, 54108), (396, 52605), (405, 51436), (420, 49599), (462, 45090), (495, 42084), (501, 41580), (540, 38577), (567, 36740), (594, 35070), (630, 33066), (660, 31563), (668, 31185), (693, 30060), (756, 27555), (770, 27054), (810, 25718), (835, 24948), (891, 23380), (924, 22545), (945, 22044), (990, 21042), (1002, 20790), (1134, 18370), (1155, 18036), (1169, 17820), (1188, 17535), (1260, 16533), (1386, 15030), (1485, 14028), (1503, 13860), (1540, 13527), (1620, 12859), (1670, 12474), (1782, 11690), (1837, 11340), (1890, 11022), (1980, 10521), (2004, 10395), (2079, 10020), (2268, 9185), (2310, 9018), (2338, 8910), (2505, 8316), (2772, 7515), (2835, 7348), (2970, 7014), (3006, 6930), (3340, 6237), (3465, 6012), (3507, 5940), (3564, 5845), (3674, 5670), (3780, 5511), (4158, 5010), (4455, 4676), (4509, 4620)]