21005556

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{12241}}^1$

素因数の和:12272

約数の個数: 48

約数和(自身を含む): 57586368

約数和(自身を除く): 36580812

約数列:

[1, 2, 3, 4, 6, 11, 12, 13, 22, 26, 33, 39, 44, 52, 66, 78, 132, 143, 156, 286, 429, 572, 858, 1716, 12241, 24482, 36723, 48964, 73446, 134651, 146892, 159133, 269302, 318266, 403953, 477399, 538604, 636532, 807906, 954798, 1615812, 1750463, 1909596, 3500926, 5251389, 7001852, 10502778, 21005556]

約数ペア:

[(1, 21005556), (2, 10502778), (3, 7001852), (4, 5251389), (6, 3500926), (11, 1909596), (12, 1750463), (13, 1615812), (22, 954798), (26, 807906), (33, 636532), (39, 538604), (44, 477399), (52, 403953), (66, 318266), (78, 269302), (132, 159133), (143, 146892), (156, 134651), (286, 73446), (429, 48964), (572, 36723), (858, 24482), (1716, 12241)]