1291215411

素因数分解:

$3^4\times {\mathrm{101}}^1\times {\mathrm{157831}}^1$

素因数の和:157944

約数の個数: 20

約数和(自身を含む): 1947962544

約数和(自身を除く): 656747133

約数列:

[1, 3, 9, 27, 81, 101, 303, 909, 2727, 8181, 157831, 473493, 1420479, 4261437, 12784311, 15940931, 47822793, 143468379, 430405137, 1291215411]

約数ペア:

[(1, 1291215411), (3, 430405137), (9, 143468379), (27, 47822793), (81, 15940931), (101, 12784311), (303, 4261437), (909, 1420479), (2727, 473493), (8181, 157831)]