19966276

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 39872448

約数和(自身を除く): 19906172

約数列:

[1, 2, 4, 11, 22, 43, 44, 61, 86, 122, 172, 173, 244, 346, 473, 671, 692, 946, 1342, 1892, 1903, 2623, 2684, 3806, 5246, 7439, 7612, 10492, 10553, 14878, 21106, 28853, 29756, 42212, 57706, 81829, 115412, 116083, 163658, 232166, 327316, 453779, 464332, 907558, 1815116, 4991569, 9983138, 19966276]

約数ペア:

[(1, 19966276), (2, 9983138), (4, 4991569), (11, 1815116), (22, 907558), (43, 464332), (44, 453779), (61, 327316), (86, 232166), (122, 163658), (172, 116083), (173, 115412), (244, 81829), (346, 57706), (473, 42212), (671, 29756), (692, 28853), (946, 21106), (1342, 14878), (1892, 10553), (1903, 10492), (2623, 7612), (2684, 7439), (3806, 5246)]