221427416

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{55691}}^1$

素因数の和:55775

約数の個数: 32

約数和(自身を含む): 481178880

約数和(自身を除く): 259751464

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 55691, 111382, 222764, 389837, 445528, 779674, 1559348, 3118696, 3954061, 7908122, 15816244, 27678427, 31632488, 55356854, 110713708, 221427416]

約数ペア:

[(1, 221427416), (2, 110713708), (4, 55356854), (7, 31632488), (8, 27678427), (14, 15816244), (28, 7908122), (56, 3954061), (71, 3118696), (142, 1559348), (284, 779674), (497, 445528), (568, 389837), (994, 222764), (1988, 111382), (3976, 55691)]