20981351552

素因数分解:

$2^7\times 7^2\times {\mathrm{31}}^2\times {\mathrm{59}}^2$

素因数の和:208

約数の個数: 216

約数和(自身を含む): 51108155955

約数和(自身を除く): 30126804403

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 49, 56, 59, 62, 64, 98, 112, 118, 124, 128, 196, 217, 224, 236, 248, 392, 413, 434, 448, 472, 496, 784, 826, 868, 896, 944, 961, 992, 1519, 1568, 1652, 1736, 1829, 1888, 1922, 1984, 2891, 3038, 3136, 3304, 3472, 3481, 3658, 3776, 3844, 3968, 5782, 6076, 6272, 6608, 6727, 6944, 6962, 7316, 7552, 7688, 11564, 12152, 12803, 13216, 13454, 13888, 13924, 14632, 15376, 23128, 24304, 24367, 25606, 26432, 26908, 27776, 27848, 29264, 30752, 46256, 47089, 48608, 48734, 51212, 52864, 53816, 55696, 56699, 58528, 61504, 89621, 92512, 94178, 97216, 97468, 102424, 107632, 107911, 111392, 113398, 117056, 123008, 170569, 179242, 185024, 188356, 194432, 194936, 204848, 215264, 215822, 222784, 226796, 234112, 341138, 358484, 370048, 376712, 389872, 396893, 409696, 430528, 431644, 445568, 453592, 682276, 716968, 753424, 755377, 779744, 793786, 819392, 861056, 863288, 907184, 1364552, 1433936, 1506848, 1510754, 1559488, 1587572, 1638784, 1726576, 1814368, 2729104, 2778251, 2867872, 3013696, 3021508, 3118976, 3175144, 3345241, 3453152, 3628736, 5287639, 5458208, 5556502, 5735744, 6027392, 6043016, 6350288, 6690482, 6906304, 7257472, 10575278, 10916416, 11113004, 11471488, 12086032, 12700576, 13380964, 13812608, 21150556, 21832832, 22226008, 23416687, 24172064, 25401152, 26761928, 42301112, 44452016, 46833374, 48344128, 50802304, 53523856, 84602224, 88904032, 93666748, 96688256, 107047712, 163916809, 169204448, 177808064, 187333496, 214095424, 327833618, 338408896, 355616128, 374666992, 428190848, 655667236, 676817792, 749333984, 1311334472, 1498667968, 2622668944, 2997335936, 5245337888, 10490675776, 20981351552]

約数ペア:

[(1, 20981351552), (2, 10490675776), (4, 5245337888), (7, 2997335936), (8, 2622668944), (14, 1498667968), (16, 1311334472), (28, 749333984), (31, 676817792), (32, 655667236), (49, 428190848), (56, 374666992), (59, 355616128), (62, 338408896), (64, 327833618), (98, 214095424), (112, 187333496), (118, 177808064), (124, 169204448), (128, 163916809), (196, 107047712), (217, 96688256), (224, 93666748), (236, 88904032), (248, 84602224), (392, 53523856), (413, 50802304), (434, 48344128), (448, 46833374), (472, 44452016), (496, 42301112), (784, 26761928), (826, 25401152), (868, 24172064), (896, 23416687), (944, 22226008), (961, 21832832), (992, 21150556), (1519, 13812608), (1568, 13380964), (1652, 12700576), (1736, 12086032), (1829, 11471488), (1888, 11113004), (1922, 10916416), (1984, 10575278), (2891, 7257472), (3038, 6906304), (3136, 6690482), (3304, 6350288), (3472, 6043016), (3481, 6027392), (3658, 5735744), (3776, 5556502), (3844, 5458208), (3968, 5287639), (5782, 3628736), (6076, 3453152), (6272, 3345241), (6608, 3175144), (6727, 3118976), (6944, 3021508), (6962, 3013696), (7316, 2867872), (7552, 2778251), (7688, 2729104), (11564, 1814368), (12152, 1726576), (12803, 1638784), (13216, 1587572), (13454, 1559488), (13888, 1510754), (13924, 1506848), (14632, 1433936), (15376, 1364552), (23128, 907184), (24304, 863288), (24367, 861056), (25606, 819392), (26432, 793786), (26908, 779744), (27776, 755377), (27848, 753424), (29264, 716968), (30752, 682276), (46256, 453592), (47089, 445568), (48608, 431644), (48734, 430528), (51212, 409696), (52864, 396893), (53816, 389872), (55696, 376712), (56699, 370048), (58528, 358484), (61504, 341138), (89621, 234112), (92512, 226796), (94178, 222784), (97216, 215822), (97468, 215264), (102424, 204848), (107632, 194936), (107911, 194432), (111392, 188356), (113398, 185024), (117056, 179242), (123008, 170569)]