21014187

素因数分解:

$3^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:299

約数の個数: 24

約数和(自身を含む): 29885328

約数和(自身を除く): 8871141

約数列:

[1, 3, 31, 37, 93, 111, 197, 591, 961, 1147, 2883, 3441, 6107, 7289, 18321, 21867, 35557, 106671, 189317, 225959, 567951, 677877, 7004729, 21014187]

約数ペア:

[(1, 21014187), (3, 7004729), (31, 677877), (37, 567951), (93, 225959), (111, 189317), (197, 106671), (591, 35557), (961, 21867), (1147, 18321), (2883, 7289), (3441, 6107)]