81832816

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{991}}^1$

素因数の和:1409

約数の個数: 40

約数和(自身を含む): 171350144

約数和(自身を除く): 89517328

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 397, 794, 991, 1588, 1982, 3176, 3964, 5161, 6352, 7928, 10322, 12883, 15856, 20644, 25766, 41288, 51532, 82576, 103064, 206128, 393427, 786854, 1573708, 3147416, 5114551, 6294832, 10229102, 20458204, 40916408, 81832816]

約数ペア:

[(1, 81832816), (2, 40916408), (4, 20458204), (8, 10229102), (13, 6294832), (16, 5114551), (26, 3147416), (52, 1573708), (104, 786854), (208, 393427), (397, 206128), (794, 103064), (991, 82576), (1588, 51532), (1982, 41288), (3176, 25766), (3964, 20644), (5161, 15856), (6352, 12883), (7928, 10322)]