20512756516

素因数分解:

$2^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1\times {\mathrm{719}}^1$

素因数の和:966

約数の個数: 144

約数和(自身を含む): 45229363200

約数和(自身を除く): 24716606684

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 47, 49, 76, 94, 98, 133, 163, 188, 196, 266, 326, 329, 532, 652, 658, 719, 893, 931, 1141, 1316, 1438, 1786, 1862, 2282, 2303, 2876, 3097, 3572, 3724, 4564, 4606, 5033, 6194, 6251, 7661, 7987, 9212, 10066, 12388, 12502, 13661, 15322, 15974, 20132, 21679, 25004, 27322, 30644, 31948, 33793, 35231, 43358, 43757, 53627, 54644, 67586, 70462, 86716, 87514, 95627, 107254, 117197, 135172, 140924, 145559, 151753, 175028, 191254, 214508, 234394, 236551, 291118, 303506, 375389, 382508, 468788, 473102, 582236, 607012, 642067, 669389, 750778, 820379, 946204, 1018913, 1284134, 1338778, 1501556, 1640758, 1655857, 2037826, 2226743, 2568268, 2677556, 3281516, 3311714, 4075652, 4453486, 4494469, 5508259, 5742653, 6623428, 7132391, 8906972, 8988938, 11016518, 11485306, 14264782, 15587201, 17977876, 22033036, 22970612, 28529564, 31174402, 31461283, 38557813, 62348804, 62922566, 77115626, 104656921, 109110407, 125845132, 154231252, 209313842, 218220814, 269904691, 418627684, 436441628, 539809382, 732598447, 1079618764, 1465196894, 2930393788, 5128189129, 10256378258, 20512756516]

約数ペア:

[(1, 20512756516), (2, 10256378258), (4, 5128189129), (7, 2930393788), (14, 1465196894), (19, 1079618764), (28, 732598447), (38, 539809382), (47, 436441628), (49, 418627684), (76, 269904691), (94, 218220814), (98, 209313842), (133, 154231252), (163, 125845132), (188, 109110407), (196, 104656921), (266, 77115626), (326, 62922566), (329, 62348804), (532, 38557813), (652, 31461283), (658, 31174402), (719, 28529564), (893, 22970612), (931, 22033036), (1141, 17977876), (1316, 15587201), (1438, 14264782), (1786, 11485306), (1862, 11016518), (2282, 8988938), (2303, 8906972), (2876, 7132391), (3097, 6623428), (3572, 5742653), (3724, 5508259), (4564, 4494469), (4606, 4453486), (5033, 4075652), (6194, 3311714), (6251, 3281516), (7661, 2677556), (7987, 2568268), (9212, 2226743), (10066, 2037826), (12388, 1655857), (12502, 1640758), (13661, 1501556), (15322, 1338778), (15974, 1284134), (20132, 1018913), (21679, 946204), (25004, 820379), (27322, 750778), (30644, 669389), (31948, 642067), (33793, 607012), (35231, 582236), (43358, 473102), (43757, 468788), (53627, 382508), (54644, 375389), (67586, 303506), (70462, 291118), (86716, 236551), (87514, 234394), (95627, 214508), (107254, 191254), (117197, 175028), (135172, 151753), (140924, 145559)]