20655404

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{337}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 45427200

約数和(自身を除く): 24771796

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 199, 308, 337, 398, 674, 796, 1348, 1393, 2189, 2359, 2786, 3707, 4378, 4718, 5572, 7414, 8756, 9436, 14828, 15323, 25949, 30646, 51898, 61292, 67063, 103796, 134126, 268252, 469441, 737693, 938882, 1475386, 1877764, 2950772, 5163851, 10327702, 20655404]

約数ペア:

[(1, 20655404), (2, 10327702), (4, 5163851), (7, 2950772), (11, 1877764), (14, 1475386), (22, 938882), (28, 737693), (44, 469441), (77, 268252), (154, 134126), (199, 103796), (308, 67063), (337, 61292), (398, 51898), (674, 30646), (796, 25949), (1348, 15323), (1393, 14828), (2189, 9436), (2359, 8756), (2786, 7414), (3707, 5572), (4378, 4718)]