21021308

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{521}}^1$

素因数の和:674

約数の個数: 48

約数和(自身を含む): 46303488

約数和(自身を除く): 25282180

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 131, 154, 262, 308, 521, 524, 917, 1042, 1441, 1834, 2084, 2882, 3647, 3668, 5731, 5764, 7294, 10087, 11462, 14588, 20174, 22924, 40117, 40348, 68251, 80234, 136502, 160468, 273004, 477757, 750761, 955514, 1501522, 1911028, 3003044, 5255327, 10510654, 21021308]

約数ペア:

[(1, 21021308), (2, 10510654), (4, 5255327), (7, 3003044), (11, 1911028), (14, 1501522), (22, 955514), (28, 750761), (44, 477757), (77, 273004), (131, 160468), (154, 136502), (262, 80234), (308, 68251), (521, 40348), (524, 40117), (917, 22924), (1042, 20174), (1441, 14588), (1834, 11462), (2084, 10087), (2882, 7294), (3647, 5764), (3668, 5731)]