21155816

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{12653}}^1$

素因数の和:12689

約数の個数: 32

約数和(自身を含む): 45554400

約数和(自身を除く): 24398584

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 152, 209, 418, 836, 1672, 12653, 25306, 50612, 101224, 139183, 240407, 278366, 480814, 556732, 961628, 1113464, 1923256, 2644477, 5288954, 10577908, 21155816]

約数ペア:

[(1, 21155816), (2, 10577908), (4, 5288954), (8, 2644477), (11, 1923256), (19, 1113464), (22, 961628), (38, 556732), (44, 480814), (76, 278366), (88, 240407), (152, 139183), (209, 101224), (418, 50612), (836, 25306), (1672, 12653)]