21065946

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{157}}^1$

素因数の和:299

約数の個数: 64

約数和(自身を含む): 49144320

約数和(自身を除く): 28078374

約数列:

[1, 2, 3, 6, 11, 19, 22, 33, 38, 57, 66, 107, 114, 157, 209, 214, 314, 321, 418, 471, 627, 642, 942, 1177, 1254, 1727, 2033, 2354, 2983, 3454, 3531, 4066, 5181, 5966, 6099, 7062, 8949, 10362, 12198, 16799, 17898, 22363, 32813, 33598, 44726, 50397, 65626, 67089, 98439, 100794, 134178, 184789, 196878, 319181, 369578, 554367, 638362, 957543, 1108734, 1915086, 3510991, 7021982, 10532973, 21065946]

約数ペア:

[(1, 21065946), (2, 10532973), (3, 7021982), (6, 3510991), (11, 1915086), (19, 1108734), (22, 957543), (33, 638362), (38, 554367), (57, 369578), (66, 319181), (107, 196878), (114, 184789), (157, 134178), (209, 100794), (214, 98439), (314, 67089), (321, 65626), (418, 50397), (471, 44726), (627, 33598), (642, 32813), (942, 22363), (1177, 17898), (1254, 16799), (1727, 12198), (2033, 10362), (2354, 8949), (2983, 7062), (3454, 6099), (3531, 5966), (4066, 5181)]