19609904

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{293}}^1$

素因数の和:437

約数の個数: 40

約数和(自身を含む): 39372480

約数和(自身を除く): 19762576

約数列:

[1, 2, 4, 8, 16, 47, 89, 94, 178, 188, 293, 356, 376, 586, 712, 752, 1172, 1424, 2344, 4183, 4688, 8366, 13771, 16732, 26077, 27542, 33464, 52154, 55084, 66928, 104308, 110168, 208616, 220336, 417232, 1225619, 2451238, 4902476, 9804952, 19609904]

約数ペア:

[(1, 19609904), (2, 9804952), (4, 4902476), (8, 2451238), (16, 1225619), (47, 417232), (89, 220336), (94, 208616), (178, 110168), (188, 104308), (293, 66928), (356, 55084), (376, 52154), (586, 33464), (712, 27542), (752, 26077), (1172, 16732), (1424, 13771), (2344, 8366), (4183, 4688)]