21538134

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{887}}^1$

素因数の和:985

約数の個数: 48

約数和(自身を含む): 49870080

約数和(自身を除く): 28331946

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 71, 114, 142, 171, 213, 342, 426, 639, 887, 1278, 1349, 1774, 2661, 2698, 4047, 5322, 7983, 8094, 12141, 15966, 16853, 24282, 33706, 50559, 62977, 101118, 125954, 151677, 188931, 303354, 377862, 566793, 1133586, 1196563, 2393126, 3589689, 7179378, 10769067, 21538134]

約数ペア:

[(1, 21538134), (2, 10769067), (3, 7179378), (6, 3589689), (9, 2393126), (18, 1196563), (19, 1133586), (38, 566793), (57, 377862), (71, 303354), (114, 188931), (142, 151677), (171, 125954), (213, 101118), (342, 62977), (426, 50559), (639, 33706), (887, 24282), (1278, 16853), (1349, 15966), (1774, 12141), (2661, 8094), (2698, 7983), (4047, 5322)]