21956967680

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{553351}}^1$

素因数の和:553403

約数の個数: 72

約数和(自身を含む): 54290471424

約数和(自身を除く): 32333503744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3968, 4960, 7936, 9920, 19840, 39680, 553351, 1106702, 2213404, 2766755, 4426808, 5533510, 8853616, 11067020, 17153881, 17707232, 22134040, 34307762, 35414464, 44268080, 68615524, 70828928, 85769405, 88536160, 137231048, 141657856, 171538810, 177072320, 274462096, 343077620, 354144640, 548924192, 686155240, 708289280, 1097848384, 1372310480, 2195696768, 2744620960, 4391393536, 5489241920, 10978483840, 21956967680]

約数ペア:

[(1, 21956967680), (2, 10978483840), (4, 5489241920), (5, 4391393536), (8, 2744620960), (10, 2195696768), (16, 1372310480), (20, 1097848384), (31, 708289280), (32, 686155240), (40, 548924192), (62, 354144640), (64, 343077620), (80, 274462096), (124, 177072320), (128, 171538810), (155, 141657856), (160, 137231048), (248, 88536160), (256, 85769405), (310, 70828928), (320, 68615524), (496, 44268080), (620, 35414464), (640, 34307762), (992, 22134040), (1240, 17707232), (1280, 17153881), (1984, 11067020), (2480, 8853616), (3968, 5533510), (4960, 4426808), (7936, 2766755), (9920, 2213404), (19840, 1106702), (39680, 553351)]