21980134

素因数分解:

$2^1\times {\mathrm{11}}^3\times {\mathrm{23}}^1\times {\mathrm{359}}^1$

素因数の和:417

約数の個数: 32

約数和(自身を含む): 37946880

約数和(自身を除く): 15966746

約数列:

[1, 2, 11, 22, 23, 46, 121, 242, 253, 359, 506, 718, 1331, 2662, 2783, 3949, 5566, 7898, 8257, 16514, 30613, 43439, 61226, 86878, 90827, 181654, 477829, 955658, 999097, 1998194, 10990067, 21980134]

約数ペア:

[(1, 21980134), (2, 10990067), (11, 1998194), (22, 999097), (23, 955658), (46, 477829), (121, 181654), (242, 90827), (253, 86878), (359, 61226), (506, 43439), (718, 30613), (1331, 16514), (2662, 8257), (2783, 7898), (3949, 5566)]