21054561

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{6317}}^1$

素因数の和:6432

約数の個数: 16

約数和(自身を含む): 30932928

約数和(自身を除く): 9878367

約数列:

[1, 3, 11, 33, 101, 303, 1111, 3333, 6317, 18951, 69487, 208461, 638017, 1914051, 7018187, 21054561]

約数ペア:

[(1, 21054561), (3, 7018187), (11, 1914051), (33, 638017), (101, 208461), (303, 69487), (1111, 18951), (3333, 6317)]