2128420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{661}}^1$

素因数の和:700

約数の個数: 48

約数和(自身を含む): 5338368

約数和(自身を除く): 3209948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 661, 805, 1322, 1610, 2644, 3220, 3305, 4627, 6610, 9254, 13220, 15203, 18508, 23135, 30406, 46270, 60812, 76015, 92540, 106421, 152030, 212842, 304060, 425684, 532105, 1064210, 2128420]

約数ペア:

[(1, 2128420), (2, 1064210), (4, 532105), (5, 425684), (7, 304060), (10, 212842), (14, 152030), (20, 106421), (23, 92540), (28, 76015), (35, 60812), (46, 46270), (70, 30406), (92, 23135), (115, 18508), (140, 15203), (161, 13220), (230, 9254), (322, 6610), (460, 4627), (644, 3305), (661, 3220), (805, 2644), (1322, 1610)]