81028668

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{29}}^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:140

約数の個数: 144

約数和(自身を含む): 237246464

約数和(自身を除く): 156217796

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 29, 31, 37, 42, 58, 62, 74, 84, 87, 93, 111, 116, 124, 148, 174, 186, 203, 217, 222, 259, 348, 372, 406, 434, 444, 518, 609, 651, 777, 812, 841, 868, 899, 1036, 1073, 1147, 1218, 1302, 1554, 1682, 1798, 2146, 2294, 2436, 2523, 2604, 2697, 3108, 3219, 3364, 3441, 3596, 4292, 4588, 5046, 5394, 5887, 6293, 6438, 6882, 7511, 8029, 10092, 10788, 11774, 12586, 12876, 13764, 15022, 16058, 17661, 18879, 22533, 23548, 24087, 25172, 26071, 30044, 31117, 32116, 33263, 35322, 37758, 45066, 48174, 52142, 62234, 66526, 70644, 75516, 78213, 90132, 93351, 96348, 99789, 104284, 124468, 133052, 156426, 182497, 186702, 199578, 217819, 232841, 312852, 364994, 373404, 399156, 435638, 465682, 547491, 653457, 698523, 729988, 871276, 931364, 964627, 1094982, 1306914, 1397046, 1929254, 2189964, 2613828, 2794092, 2893881, 3858508, 5787762, 6752389, 11575524, 13504778, 20257167, 27009556, 40514334, 81028668]

約数ペア:

[(1, 81028668), (2, 40514334), (3, 27009556), (4, 20257167), (6, 13504778), (7, 11575524), (12, 6752389), (14, 5787762), (21, 3858508), (28, 2893881), (29, 2794092), (31, 2613828), (37, 2189964), (42, 1929254), (58, 1397046), (62, 1306914), (74, 1094982), (84, 964627), (87, 931364), (93, 871276), (111, 729988), (116, 698523), (124, 653457), (148, 547491), (174, 465682), (186, 435638), (203, 399156), (217, 373404), (222, 364994), (259, 312852), (348, 232841), (372, 217819), (406, 199578), (434, 186702), (444, 182497), (518, 156426), (609, 133052), (651, 124468), (777, 104284), (812, 99789), (841, 96348), (868, 93351), (899, 90132), (1036, 78213), (1073, 75516), (1147, 70644), (1218, 66526), (1302, 62234), (1554, 52142), (1682, 48174), (1798, 45066), (2146, 37758), (2294, 35322), (2436, 33263), (2523, 32116), (2604, 31117), (2697, 30044), (3108, 26071), (3219, 25172), (3364, 24087), (3441, 23548), (3596, 22533), (4292, 18879), (4588, 17661), (5046, 16058), (5394, 15022), (5887, 13764), (6293, 12876), (6438, 12586), (6882, 11774), (7511, 10788), (8029, 10092)]