20996144

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{100943}}^1$

素因数の和:100964

約数の個数: 20

約数和(自身を含む): 43809696

約数和(自身を除く): 22813552

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 100943, 201886, 403772, 807544, 1312259, 1615088, 2624518, 5249036, 10498072, 20996144]

約数ペア:

[(1, 20996144), (2, 10498072), (4, 5249036), (8, 2624518), (13, 1615088), (16, 1312259), (26, 807544), (52, 403772), (104, 201886), (208, 100943)]