19721504

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{313}}^1$

素因数の和:513

約数の個数: 48

約数和(自身を含む): 42729120

約数和(自身を除く): 23007616

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 176, 179, 313, 352, 358, 626, 716, 1252, 1432, 1969, 2504, 2864, 3443, 3938, 5008, 5728, 6886, 7876, 10016, 13772, 15752, 27544, 31504, 55088, 56027, 63008, 110176, 112054, 224108, 448216, 616297, 896432, 1232594, 1792864, 2465188, 4930376, 9860752, 19721504]

約数ペア:

[(1, 19721504), (2, 9860752), (4, 4930376), (8, 2465188), (11, 1792864), (16, 1232594), (22, 896432), (32, 616297), (44, 448216), (88, 224108), (176, 112054), (179, 110176), (313, 63008), (352, 56027), (358, 55088), (626, 31504), (716, 27544), (1252, 15752), (1432, 13772), (1969, 10016), (2504, 7876), (2864, 6886), (3443, 5728), (3938, 5008)]