20517704

素因数分解:

$2^3\times {\mathrm{89}}^1\times {\mathrm{28817}}^1$

素因数の和:28912

約数の個数: 16

約数和(自身を含む): 38904300

約数和(自身を除く): 18386596

約数列:

[1, 2, 4, 8, 89, 178, 356, 712, 28817, 57634, 115268, 230536, 2564713, 5129426, 10258852, 20517704]

約数ペア:

[(1, 20517704), (2, 10258852), (4, 5129426), (8, 2564713), (89, 230536), (178, 115268), (356, 57634), (712, 28817)]