81251996

素因数分解:

$2^2\times 7^2\times {\mathrm{41}}^1\times {\mathrm{10111}}^1$

素因数の和:10170

約数の個数: 36

約数和(自身を含む): 169456896

約数和(自身を除く): 88204900

約数列:

[1, 2, 4, 7, 14, 28, 41, 49, 82, 98, 164, 196, 287, 574, 1148, 2009, 4018, 8036, 10111, 20222, 40444, 70777, 141554, 283108, 414551, 495439, 829102, 990878, 1658204, 1981756, 2901857, 5803714, 11607428, 20312999, 40625998, 81251996]

約数ペア:

[(1, 81251996), (2, 40625998), (4, 20312999), (7, 11607428), (14, 5803714), (28, 2901857), (41, 1981756), (49, 1658204), (82, 990878), (98, 829102), (164, 495439), (196, 414551), (287, 283108), (574, 141554), (1148, 70777), (2009, 40444), (4018, 20222), (8036, 10111)]