81716210

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{109}}^1\times {\mathrm{1229}}^1$

素因数の和:1406

約数の個数: 32

約数和(自身を含む): 150994800

約数和(自身を除く): 69278590

約数列:

[1, 2, 5, 10, 61, 109, 122, 218, 305, 545, 610, 1090, 1229, 2458, 6145, 6649, 12290, 13298, 33245, 66490, 74969, 133961, 149938, 267922, 374845, 669805, 749690, 1339610, 8171621, 16343242, 40858105, 81716210]

約数ペア:

[(1, 81716210), (2, 40858105), (5, 16343242), (10, 8171621), (61, 1339610), (109, 749690), (122, 669805), (218, 374845), (305, 267922), (545, 149938), (610, 133961), (1090, 74969), (1229, 66490), (2458, 33245), (6145, 13298), (6649, 12290)]