20319642819

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^2\times {\mathrm{331}}^1$

素因数の和:478

約数の個数: 144

約数和(自身を含む): 37648226304

約数和(自身を除く): 17328583485

約数列:

[1, 3, 7, 9, 17, 21, 31, 43, 51, 63, 93, 119, 129, 153, 217, 279, 301, 331, 357, 387, 527, 651, 731, 903, 993, 1071, 1333, 1581, 1849, 1953, 2193, 2317, 2709, 2979, 3689, 3999, 4743, 5117, 5547, 5627, 6579, 6951, 9331, 10261, 11067, 11997, 12943, 14233, 15351, 16641, 16881, 20853, 22661, 27993, 30783, 31433, 33201, 38829, 39389, 42699, 46053, 50643, 57319, 67983, 71827, 83979, 92349, 94299, 99631, 116487, 118167, 128097, 158627, 171957, 174437, 203949, 215481, 220031, 241961, 282897, 298893, 354501, 401233, 441223, 475881, 515871, 523311, 612019, 646443, 660093, 725883, 896679, 974423, 1203699, 1221059, 1323669, 1427643, 1569933, 1693727, 1836057, 1980279, 2177649, 2923269, 3088561, 3611097, 3663177, 3971007, 4284133, 5081181, 5508171, 6820961, 7500791, 8769807, 9265683, 10404323, 10989531, 12852399, 15243543, 18972589, 20462883, 22502373, 27797049, 31212969, 38557197, 52505537, 56917767, 61388649, 67507119, 72830261, 93638907, 132808123, 157516611, 170753301, 218490783, 322534013, 398424369, 472549833, 655472349, 967602039, 1195273107, 2257738091, 2902806117, 6773214273, 20319642819]

約数ペア:

[(1, 20319642819), (3, 6773214273), (7, 2902806117), (9, 2257738091), (17, 1195273107), (21, 967602039), (31, 655472349), (43, 472549833), (51, 398424369), (63, 322534013), (93, 218490783), (119, 170753301), (129, 157516611), (153, 132808123), (217, 93638907), (279, 72830261), (301, 67507119), (331, 61388649), (357, 56917767), (387, 52505537), (527, 38557197), (651, 31212969), (731, 27797049), (903, 22502373), (993, 20462883), (1071, 18972589), (1333, 15243543), (1581, 12852399), (1849, 10989531), (1953, 10404323), (2193, 9265683), (2317, 8769807), (2709, 7500791), (2979, 6820961), (3689, 5508171), (3999, 5081181), (4743, 4284133), (5117, 3971007), (5547, 3663177), (5627, 3611097), (6579, 3088561), (6951, 2923269), (9331, 2177649), (10261, 1980279), (11067, 1836057), (11997, 1693727), (12943, 1569933), (14233, 1427643), (15351, 1323669), (16641, 1221059), (16881, 1203699), (20853, 974423), (22661, 896679), (27993, 725883), (30783, 660093), (31433, 646443), (33201, 612019), (38829, 523311), (39389, 515871), (42699, 475881), (46053, 441223), (50643, 401233), (57319, 354501), (67983, 298893), (71827, 282897), (83979, 241961), (92349, 220031), (94299, 215481), (99631, 203949), (116487, 174437), (118167, 171957), (128097, 158627)]