21785784

素因数分解:

$2^3\times 3^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{647}}^1$

素因数の和:740

約数の個数: 64

約数和(自身を含む): 57853440

約数和(自身を除く): 36067656

約数列:

[1, 2, 3, 4, 6, 8, 12, 23, 24, 46, 61, 69, 92, 122, 138, 183, 184, 244, 276, 366, 488, 552, 647, 732, 1294, 1403, 1464, 1941, 2588, 2806, 3882, 4209, 5176, 5612, 7764, 8418, 11224, 14881, 15528, 16836, 29762, 33672, 39467, 44643, 59524, 78934, 89286, 118401, 119048, 157868, 178572, 236802, 315736, 357144, 473604, 907741, 947208, 1815482, 2723223, 3630964, 5446446, 7261928, 10892892, 21785784]

約数ペア:

[(1, 21785784), (2, 10892892), (3, 7261928), (4, 5446446), (6, 3630964), (8, 2723223), (12, 1815482), (23, 947208), (24, 907741), (46, 473604), (61, 357144), (69, 315736), (92, 236802), (122, 178572), (138, 157868), (183, 119048), (184, 118401), (244, 89286), (276, 78934), (366, 59524), (488, 44643), (552, 39467), (647, 33672), (732, 29762), (1294, 16836), (1403, 15528), (1464, 14881), (1941, 11224), (2588, 8418), (2806, 7764), (3882, 5612), (4209, 5176)]