20909876

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{2663}}^1$

素因数の和:2831

約数の個数: 24

約数和(自身を含む): 39682944

約数和(自身を除く): 18773068

約数列:

[1, 2, 4, 13, 26, 52, 151, 302, 604, 1963, 2663, 3926, 5326, 7852, 10652, 34619, 69238, 138476, 402113, 804226, 1608452, 5227469, 10454938, 20909876]

約数ペア:

[(1, 20909876), (2, 10454938), (4, 5227469), (13, 1608452), (26, 804226), (52, 402113), (151, 138476), (302, 69238), (604, 34619), (1963, 10652), (2663, 7852), (3926, 5326)]