20480944

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{149}}^1$

素因数の和:250

約数の個数: 60

約数和(自身を含む): 44528400

約数和(自身を除く): 24047456

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 71, 88, 121, 142, 149, 176, 242, 284, 298, 484, 568, 596, 781, 968, 1136, 1192, 1562, 1639, 1936, 2384, 3124, 3278, 6248, 6556, 8591, 10579, 12496, 13112, 17182, 18029, 21158, 26224, 34364, 36058, 42316, 68728, 72116, 84632, 116369, 137456, 144232, 169264, 232738, 288464, 465476, 930952, 1280059, 1861904, 2560118, 5120236, 10240472, 20480944]

約数ペア:

[(1, 20480944), (2, 10240472), (4, 5120236), (8, 2560118), (11, 1861904), (16, 1280059), (22, 930952), (44, 465476), (71, 288464), (88, 232738), (121, 169264), (142, 144232), (149, 137456), (176, 116369), (242, 84632), (284, 72116), (298, 68728), (484, 42316), (568, 36058), (596, 34364), (781, 26224), (968, 21158), (1136, 18029), (1192, 17182), (1562, 13112), (1639, 12496), (1936, 10579), (2384, 8591), (3124, 6556), (3278, 6248)]