20215910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:309

約数の個数: 64

約数和(自身を含む): 43593984

約数和(自身を除く): 23378074

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 67, 110, 130, 134, 143, 211, 286, 335, 422, 670, 715, 737, 871, 1055, 1430, 1474, 1742, 2110, 2321, 2743, 3685, 4355, 4642, 5486, 7370, 8710, 9581, 11605, 13715, 14137, 19162, 23210, 27430, 28274, 30173, 47905, 60346, 70685, 95810, 141370, 150865, 155507, 183781, 301730, 311014, 367562, 777535, 918905, 1555070, 1837810, 2021591, 4043182, 10107955, 20215910]

約数ペア:

[(1, 20215910), (2, 10107955), (5, 4043182), (10, 2021591), (11, 1837810), (13, 1555070), (22, 918905), (26, 777535), (55, 367562), (65, 311014), (67, 301730), (110, 183781), (130, 155507), (134, 150865), (143, 141370), (211, 95810), (286, 70685), (335, 60346), (422, 47905), (670, 30173), (715, 28274), (737, 27430), (871, 23210), (1055, 19162), (1430, 14137), (1474, 13715), (1742, 11605), (2110, 9581), (2321, 8710), (2743, 7370), (3685, 5486), (4355, 4642)]