21516684

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:124

約数の個数: 144

約数和(自身を含む): 64044288

約数和(自身を除く): 42527604

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 23, 28, 37, 42, 43, 46, 49, 69, 74, 84, 86, 92, 98, 111, 129, 138, 147, 148, 161, 172, 196, 222, 258, 259, 276, 294, 301, 322, 444, 483, 516, 518, 588, 602, 644, 777, 851, 903, 966, 989, 1036, 1127, 1204, 1554, 1591, 1702, 1806, 1813, 1932, 1978, 2107, 2254, 2553, 2967, 3108, 3182, 3381, 3404, 3612, 3626, 3956, 4214, 4508, 4773, 5106, 5439, 5934, 5957, 6321, 6364, 6762, 6923, 7252, 8428, 9546, 10212, 10878, 11137, 11868, 11914, 12642, 13524, 13846, 17871, 19092, 20769, 21756, 22274, 23828, 25284, 27692, 33411, 35742, 36593, 41538, 41699, 44548, 48461, 66822, 71484, 73186, 77959, 83076, 83398, 96922, 109779, 125097, 133644, 145383, 146372, 155918, 166796, 193844, 219558, 233877, 250194, 256151, 290766, 311836, 439116, 467754, 500388, 512302, 581532, 768453, 935508, 1024604, 1536906, 1793057, 3073812, 3586114, 5379171, 7172228, 10758342, 21516684]

約数ペア:

[(1, 21516684), (2, 10758342), (3, 7172228), (4, 5379171), (6, 3586114), (7, 3073812), (12, 1793057), (14, 1536906), (21, 1024604), (23, 935508), (28, 768453), (37, 581532), (42, 512302), (43, 500388), (46, 467754), (49, 439116), (69, 311836), (74, 290766), (84, 256151), (86, 250194), (92, 233877), (98, 219558), (111, 193844), (129, 166796), (138, 155918), (147, 146372), (148, 145383), (161, 133644), (172, 125097), (196, 109779), (222, 96922), (258, 83398), (259, 83076), (276, 77959), (294, 73186), (301, 71484), (322, 66822), (444, 48461), (483, 44548), (516, 41699), (518, 41538), (588, 36593), (602, 35742), (644, 33411), (777, 27692), (851, 25284), (903, 23828), (966, 22274), (989, 21756), (1036, 20769), (1127, 19092), (1204, 17871), (1554, 13846), (1591, 13524), (1702, 12642), (1806, 11914), (1813, 11868), (1932, 11137), (1978, 10878), (2107, 10212), (2254, 9546), (2553, 8428), (2967, 7252), (3108, 6923), (3182, 6762), (3381, 6364), (3404, 6321), (3612, 5957), (3626, 5934), (3956, 5439), (4214, 5106), (4508, 4773)]