20798128

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{99991}}^1$

素因数の和:100012

約数の個数: 20

約数和(自身を含む): 43396528

約数和(自身を除く): 22598400

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 99991, 199982, 399964, 799928, 1299883, 1599856, 2599766, 5199532, 10399064, 20798128]

約数ペア:

[(1, 20798128), (2, 10399064), (4, 5199532), (8, 2599766), (13, 1599856), (16, 1299883), (26, 799928), (52, 399964), (104, 199982), (208, 99991)]