19712253

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{211}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 30528000

約数和(自身を除く): 10815747

約数列:

[1, 3, 11, 19, 33, 57, 149, 209, 211, 447, 627, 633, 1639, 2321, 2831, 4009, 4917, 6963, 8493, 12027, 31141, 31439, 44099, 93423, 94317, 132297, 345829, 597341, 1037487, 1792023, 6570751, 19712253]

約数ペア:

[(1, 19712253), (3, 6570751), (11, 1792023), (19, 1037487), (33, 597341), (57, 345829), (149, 132297), (209, 94317), (211, 93423), (447, 44099), (627, 31439), (633, 31141), (1639, 12027), (2321, 8493), (2831, 6963), (4009, 4917)]