19986879

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{251}}^1$

素因数の和:411

約数の個数: 32

約数和(自身を含む): 30965760

約数和(自身を除く): 10978881

約数列:

[1, 3, 11, 19, 33, 57, 127, 209, 251, 381, 627, 753, 1397, 2413, 2761, 4191, 4769, 7239, 8283, 14307, 26543, 31877, 52459, 79629, 95631, 157377, 350647, 605663, 1051941, 1816989, 6662293, 19986879]

約数ペア:

[(1, 19986879), (3, 6662293), (11, 1816989), (19, 1051941), (33, 605663), (57, 350647), (127, 157377), (209, 95631), (251, 79629), (381, 52459), (627, 31877), (753, 26543), (1397, 14307), (2413, 8283), (2761, 7239), (4191, 4769)]