21871227

素因数分解:

$3^1\times 7^1\times {\mathrm{613}}^1\times {\mathrm{1699}}^1$

素因数の和:2322

約数の個数: 16

約数和(自身を含む): 33401600

約数和(自身を除く): 11530373

約数列:

[1, 3, 7, 21, 613, 1699, 1839, 4291, 5097, 11893, 12873, 35679, 1041487, 3124461, 7290409, 21871227]

約数ペア:

[(1, 21871227), (3, 7290409), (7, 3124461), (21, 1041487), (613, 35679), (1699, 12873), (1839, 11893), (4291, 5097)]