21580020

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1$

素因数の和:212

約数の個数: 240

約数和(自身を含む): 84889728

約数和(自身を除く): 63309708

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, 173, 180, 189, 198, 210, 220, 231, 252, 270, 297, 308, 315, 324, 330, 346, 378, 385, 396, 405, 420, 462, 495, 519, 540, 567, 594, 630, 660, 692, 693, 756, 770, 810, 865, 891, 924, 945, 990, 1038, 1134, 1155, 1188, 1211, 1260, 1386, 1485, 1540, 1557, 1620, 1730, 1782, 1890, 1903, 1980, 2076, 2079, 2268, 2310, 2422, 2595, 2772, 2835, 2970, 3114, 3460, 3465, 3564, 3633, 3780, 3806, 4158, 4455, 4620, 4671, 4844, 5190, 5670, 5709, 5940, 6055, 6228, 6237, 6930, 7266, 7612, 7785, 8316, 8910, 9342, 9515, 10380, 10395, 10899, 11340, 11418, 12110, 12474, 13321, 13860, 14013, 14532, 15570, 17127, 17820, 18165, 18684, 19030, 20790, 21798, 22836, 23355, 24220, 24948, 26642, 28026, 28545, 31140, 31185, 32697, 34254, 36330, 38060, 39963, 41580, 43596, 46710, 51381, 53284, 54495, 56052, 57090, 62370, 65394, 66605, 68508, 70065, 72660, 79926, 85635, 93420, 98091, 102762, 108990, 114180, 119889, 124740, 130788, 133210, 140130, 154143, 159852, 163485, 171270, 196182, 199815, 205524, 217980, 239778, 256905, 266420, 280260, 308286, 326970, 342540, 359667, 392364, 399630, 479556, 490455, 513810, 599445, 616572, 653940, 719334, 770715, 799260, 980910, 1027620, 1079001, 1198890, 1438668, 1541430, 1798335, 1961820, 2158002, 2397780, 3082860, 3596670, 4316004, 5395005, 7193340, 10790010, 21580020]

約数ペア:

[(1, 21580020), (2, 10790010), (3, 7193340), (4, 5395005), (5, 4316004), (6, 3596670), (7, 3082860), (9, 2397780), (10, 2158002), (11, 1961820), (12, 1798335), (14, 1541430), (15, 1438668), (18, 1198890), (20, 1079001), (21, 1027620), (22, 980910), (27, 799260), (28, 770715), (30, 719334), (33, 653940), (35, 616572), (36, 599445), (42, 513810), (44, 490455), (45, 479556), (54, 399630), (55, 392364), (60, 359667), (63, 342540), (66, 326970), (70, 308286), (77, 280260), (81, 266420), (84, 256905), (90, 239778), (99, 217980), (105, 205524), (108, 199815), (110, 196182), (126, 171270), (132, 163485), (135, 159852), (140, 154143), (154, 140130), (162, 133210), (165, 130788), (173, 124740), (180, 119889), (189, 114180), (198, 108990), (210, 102762), (220, 98091), (231, 93420), (252, 85635), (270, 79926), (297, 72660), (308, 70065), (315, 68508), (324, 66605), (330, 65394), (346, 62370), (378, 57090), (385, 56052), (396, 54495), (405, 53284), (420, 51381), (462, 46710), (495, 43596), (519, 41580), (540, 39963), (567, 38060), (594, 36330), (630, 34254), (660, 32697), (692, 31185), (693, 31140), (756, 28545), (770, 28026), (810, 26642), (865, 24948), (891, 24220), (924, 23355), (945, 22836), (990, 21798), (1038, 20790), (1134, 19030), (1155, 18684), (1188, 18165), (1211, 17820), (1260, 17127), (1386, 15570), (1485, 14532), (1540, 14013), (1557, 13860), (1620, 13321), (1730, 12474), (1782, 12110), (1890, 11418), (1903, 11340), (1980, 10899), (2076, 10395), (2079, 10380), (2268, 9515), (2310, 9342), (2422, 8910), (2595, 8316), (2772, 7785), (2835, 7612), (2970, 7266), (3114, 6930), (3460, 6237), (3465, 6228), (3564, 6055), (3633, 5940), (3780, 5709), (3806, 5670), (4158, 5190), (4455, 4844), (4620, 4671)]