21971988

素因数分解:

$2^2\times 3^2\times {\mathrm{199}}^1\times {\mathrm{3067}}^1$

素因数の和:3276

約数の個数: 36

約数和(自身を含む): 55837600

約数和(自身を除く): 33865612

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 199, 398, 597, 796, 1194, 1791, 2388, 3067, 3582, 6134, 7164, 9201, 12268, 18402, 27603, 36804, 55206, 110412, 610333, 1220666, 1830999, 2441332, 3661998, 5492997, 7323996, 10985994, 21971988]

約数ペア:

[(1, 21971988), (2, 10985994), (3, 7323996), (4, 5492997), (6, 3661998), (9, 2441332), (12, 1830999), (18, 1220666), (36, 610333), (199, 110412), (398, 55206), (597, 36804), (796, 27603), (1194, 18402), (1791, 12268), (2388, 9201), (3067, 7164), (3582, 6134)]