21260072

素因数分解:

$2^3\times {\mathrm{97}}^1\times {\mathrm{27397}}^1$

素因数の和:27500

約数の個数: 16

約数和(自身を含む): 40275060

約数和(自身を除く): 19014988

約数列:

[1, 2, 4, 8, 97, 194, 388, 776, 27397, 54794, 109588, 219176, 2657509, 5315018, 10630036, 21260072]

約数ペア:

[(1, 21260072), (2, 10630036), (4, 5315018), (8, 2657509), (97, 219176), (194, 109588), (388, 54794), (776, 27397)]