21079634944

素因数分解:

$2^{10}\times {\mathrm{31}}^3\times {\mathrm{691}}^1$

素因数の和:804

約数の個数: 88

約数和(自身を含む): 43606274816

約数和(自身を除く): 22526639872

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 691, 961, 992, 1024, 1382, 1922, 1984, 2764, 3844, 3968, 5528, 7688, 7936, 11056, 15376, 15872, 21421, 22112, 29791, 30752, 31744, 42842, 44224, 59582, 61504, 85684, 88448, 119164, 123008, 171368, 176896, 238328, 246016, 342736, 353792, 476656, 492032, 664051, 685472, 707584, 953312, 984064, 1328102, 1370944, 1906624, 2656204, 2741888, 3813248, 5312408, 5483776, 7626496, 10624816, 10967552, 15252992, 20585581, 21249632, 21935104, 30505984, 41171162, 42499264, 82342324, 84998528, 164684648, 169997056, 329369296, 339994112, 658738592, 679988224, 1317477184, 2634954368, 5269908736, 10539817472, 21079634944]

約数ペア:

[(1, 21079634944), (2, 10539817472), (4, 5269908736), (8, 2634954368), (16, 1317477184), (31, 679988224), (32, 658738592), (62, 339994112), (64, 329369296), (124, 169997056), (128, 164684648), (248, 84998528), (256, 82342324), (496, 42499264), (512, 41171162), (691, 30505984), (961, 21935104), (992, 21249632), (1024, 20585581), (1382, 15252992), (1922, 10967552), (1984, 10624816), (2764, 7626496), (3844, 5483776), (3968, 5312408), (5528, 3813248), (7688, 2741888), (7936, 2656204), (11056, 1906624), (15376, 1370944), (15872, 1328102), (21421, 984064), (22112, 953312), (29791, 707584), (30752, 685472), (31744, 664051), (42842, 492032), (44224, 476656), (59582, 353792), (61504, 342736), (85684, 246016), (88448, 238328), (119164, 176896), (123008, 171368)]