20122712080

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{36523}}^1$

素因数の和:36704

約数の個数: 80

約数和(自身を含む): 47934681984

約数和(自身を除く): 27811969904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 97, 142, 194, 284, 355, 388, 485, 568, 710, 776, 970, 1136, 1420, 1552, 1940, 2840, 3880, 5680, 6887, 7760, 13774, 27548, 34435, 36523, 55096, 68870, 73046, 110192, 137740, 146092, 182615, 275480, 292184, 365230, 550960, 584368, 730460, 1460920, 2593133, 2921840, 3542731, 5186266, 7085462, 10372532, 12965665, 14170924, 17713655, 20745064, 25931330, 28341848, 35427310, 41490128, 51862660, 56683696, 70854620, 103725320, 141709240, 207450640, 251533901, 283418480, 503067802, 1006135604, 1257669505, 2012271208, 2515339010, 4024542416, 5030678020, 10061356040, 20122712080]

約数ペア:

[(1, 20122712080), (2, 10061356040), (4, 5030678020), (5, 4024542416), (8, 2515339010), (10, 2012271208), (16, 1257669505), (20, 1006135604), (40, 503067802), (71, 283418480), (80, 251533901), (97, 207450640), (142, 141709240), (194, 103725320), (284, 70854620), (355, 56683696), (388, 51862660), (485, 41490128), (568, 35427310), (710, 28341848), (776, 25931330), (970, 20745064), (1136, 17713655), (1420, 14170924), (1552, 12965665), (1940, 10372532), (2840, 7085462), (3880, 5186266), (5680, 3542731), (6887, 2921840), (7760, 2593133), (13774, 1460920), (27548, 730460), (34435, 584368), (36523, 550960), (55096, 365230), (68870, 292184), (73046, 275480), (110192, 182615), (137740, 146092)]