20817704

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{38839}}^1$

素因数の和:38912

約数の個数: 16

約数和(自身を含む): 39616800

約数和(自身を除く): 18799096

約数列:

[1, 2, 4, 8, 67, 134, 268, 536, 38839, 77678, 155356, 310712, 2602213, 5204426, 10408852, 20817704]

約数ペア:

[(1, 20817704), (2, 10408852), (4, 5204426), (8, 2602213), (67, 310712), (134, 155356), (268, 77678), (536, 38839)]