220120208

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1$

素因数の和:217

約数の個数: 160

約数和(自身を含む): 564606720

約数和(自身を除く): 344486512

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 29, 44, 56, 58, 61, 77, 88, 101, 112, 116, 122, 154, 176, 202, 203, 232, 244, 308, 319, 404, 406, 427, 464, 488, 616, 638, 671, 707, 808, 812, 854, 976, 1111, 1232, 1276, 1342, 1414, 1616, 1624, 1708, 1769, 2222, 2233, 2552, 2684, 2828, 2929, 3248, 3416, 3538, 4444, 4466, 4697, 5104, 5368, 5656, 5858, 6161, 6832, 7076, 7777, 8888, 8932, 9394, 10736, 11312, 11716, 12322, 12383, 14152, 15554, 17776, 17864, 18788, 19459, 20503, 23432, 24644, 24766, 28304, 31108, 32219, 35728, 37576, 38918, 41006, 43127, 46864, 49288, 49532, 62216, 64438, 67771, 75152, 77836, 82012, 86254, 98576, 99064, 124432, 128876, 135542, 136213, 155672, 164024, 172508, 178669, 198128, 225533, 257752, 271084, 272426, 311344, 328048, 345016, 357338, 451066, 474397, 515504, 542168, 544852, 690032, 714676, 902132, 948794, 1084336, 1089704, 1250683, 1429352, 1804264, 1897588, 1965359, 2179408, 2501366, 2858704, 3608528, 3795176, 3930718, 5002732, 7590352, 7861436, 10005464, 13757513, 15722872, 20010928, 27515026, 31445744, 55030052, 110060104, 220120208]

約数ペア:

[(1, 220120208), (2, 110060104), (4, 55030052), (7, 31445744), (8, 27515026), (11, 20010928), (14, 15722872), (16, 13757513), (22, 10005464), (28, 7861436), (29, 7590352), (44, 5002732), (56, 3930718), (58, 3795176), (61, 3608528), (77, 2858704), (88, 2501366), (101, 2179408), (112, 1965359), (116, 1897588), (122, 1804264), (154, 1429352), (176, 1250683), (202, 1089704), (203, 1084336), (232, 948794), (244, 902132), (308, 714676), (319, 690032), (404, 544852), (406, 542168), (427, 515504), (464, 474397), (488, 451066), (616, 357338), (638, 345016), (671, 328048), (707, 311344), (808, 272426), (812, 271084), (854, 257752), (976, 225533), (1111, 198128), (1232, 178669), (1276, 172508), (1342, 164024), (1414, 155672), (1616, 136213), (1624, 135542), (1708, 128876), (1769, 124432), (2222, 99064), (2233, 98576), (2552, 86254), (2684, 82012), (2828, 77836), (2929, 75152), (3248, 67771), (3416, 64438), (3538, 62216), (4444, 49532), (4466, 49288), (4697, 46864), (5104, 43127), (5368, 41006), (5656, 38918), (5858, 37576), (6161, 35728), (6832, 32219), (7076, 31108), (7777, 28304), (8888, 24766), (8932, 24644), (9394, 23432), (10736, 20503), (11312, 19459), (11716, 18788), (12322, 17864), (12383, 17776), (14152, 15554)]