20687012241

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{337}}^1\times {\mathrm{1607}}^1$

素因数の和:2078

約数の個数: 64

約数和(自身を含む): 33810296832

約数和(自身を除く): 13123284591

約数列:

[1, 3, 7, 17, 21, 51, 107, 119, 321, 337, 357, 749, 1011, 1607, 1819, 2247, 2359, 4821, 5457, 5729, 7077, 11249, 12733, 17187, 27319, 33747, 36059, 38199, 40103, 81957, 108177, 120309, 171949, 191233, 252413, 515847, 541559, 573699, 613003, 757239, 1203643, 1624677, 1839009, 2923133, 3610929, 3790913, 4291021, 8769399, 9206503, 11372739, 12873063, 20461931, 27619509, 57946813, 61385793, 64445521, 173840439, 193336563, 405627691, 985095821, 1216883073, 2955287463, 6895670747, 20687012241]

約数ペア:

[(1, 20687012241), (3, 6895670747), (7, 2955287463), (17, 1216883073), (21, 985095821), (51, 405627691), (107, 193336563), (119, 173840439), (321, 64445521), (337, 61385793), (357, 57946813), (749, 27619509), (1011, 20461931), (1607, 12873063), (1819, 11372739), (2247, 9206503), (2359, 8769399), (4821, 4291021), (5457, 3790913), (5729, 3610929), (7077, 2923133), (11249, 1839009), (12733, 1624677), (17187, 1203643), (27319, 757239), (33747, 613003), (36059, 573699), (38199, 541559), (40103, 515847), (81957, 252413), (108177, 191233), (120309, 171949)]