21801364

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{1987}}^1$

素因数の和:2215

約数の個数: 24

約数和(自身を含む): 41302688

約数和(自身を除く): 19501324

約数列:

[1, 2, 4, 13, 26, 52, 211, 422, 844, 1987, 2743, 3974, 5486, 7948, 10972, 25831, 51662, 103324, 419257, 838514, 1677028, 5450341, 10900682, 21801364]

約数ペア:

[(1, 21801364), (2, 10900682), (4, 5450341), (13, 1677028), (26, 838514), (52, 419257), (211, 103324), (422, 51662), (844, 25831), (1987, 10972), (2743, 7948), (3974, 5486)]