18981172

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{8581}}^1$

素因数の和:8671

約数の個数: 24

約数和(自身を含む): 38447360

約数和(自身を除く): 19466188

約数列:

[1, 2, 4, 7, 14, 28, 79, 158, 316, 553, 1106, 2212, 8581, 17162, 34324, 60067, 120134, 240268, 677899, 1355798, 2711596, 4745293, 9490586, 18981172]

約数ペア:

[(1, 18981172), (2, 9490586), (4, 4745293), (7, 2711596), (14, 1355798), (28, 677899), (79, 240268), (158, 120134), (316, 60067), (553, 34324), (1106, 17162), (2212, 8581)]