19977892

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1039}}^1$

素因数の和:1096

約数の個数: 48

約数和(自身を含む): 41932800

約数和(自身を除く): 21954908

約数列:

[1, 2, 4, 11, 19, 22, 23, 38, 44, 46, 76, 92, 209, 253, 418, 437, 506, 836, 874, 1012, 1039, 1748, 2078, 4156, 4807, 9614, 11429, 19228, 19741, 22858, 23897, 39482, 45716, 47794, 78964, 95588, 217151, 262867, 434302, 454043, 525734, 868604, 908086, 1051468, 1816172, 4994473, 9988946, 19977892]

約数ペア:

[(1, 19977892), (2, 9988946), (4, 4994473), (11, 1816172), (19, 1051468), (22, 908086), (23, 868604), (38, 525734), (44, 454043), (46, 434302), (76, 262867), (92, 217151), (209, 95588), (253, 78964), (418, 47794), (437, 45716), (506, 39482), (836, 23897), (874, 22858), (1012, 19741), (1039, 19228), (1748, 11429), (2078, 9614), (4156, 4807)]