21394998

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{16741}}^1$

素因数の和:16820

約数の個数: 24

約数和(自身を含む): 47011536

約数和(自身を除く): 25616538

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 16741, 33482, 50223, 100446, 150669, 301338, 1188611, 2377222, 3565833, 7131666, 10697499, 21394998]

約数ペア:

[(1, 21394998), (2, 10697499), (3, 7131666), (6, 3565833), (9, 2377222), (18, 1188611), (71, 301338), (142, 150669), (213, 100446), (426, 50223), (639, 33482), (1278, 16741)]