21238938

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{2857}}^1$

素因数の和:2931

約数の個数: 48

約数和(自身を含む): 53501760

約数和(自身を除く): 32262822

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 59, 63, 118, 126, 177, 354, 413, 531, 826, 1062, 1239, 2478, 2857, 3717, 5714, 7434, 8571, 17142, 19999, 25713, 39998, 51426, 59997, 119994, 168563, 179991, 337126, 359982, 505689, 1011378, 1179941, 1517067, 2359882, 3034134, 3539823, 7079646, 10619469, 21238938]

約数ペア:

[(1, 21238938), (2, 10619469), (3, 7079646), (6, 3539823), (7, 3034134), (9, 2359882), (14, 1517067), (18, 1179941), (21, 1011378), (42, 505689), (59, 359982), (63, 337126), (118, 179991), (126, 168563), (177, 119994), (354, 59997), (413, 51426), (531, 39998), (826, 25713), (1062, 19999), (1239, 17142), (2478, 8571), (2857, 7434), (3717, 5714)]