220348520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{786959}}^1$

素因数の和:786977

約数の個数: 32

約数和(自身を含む): 566611200

約数和(自身を除く): 346262680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 786959, 1573918, 3147836, 3934795, 5508713, 6295672, 7869590, 11017426, 15739180, 22034852, 27543565, 31478360, 44069704, 55087130, 110174260, 220348520]

約数ペア:

[(1, 220348520), (2, 110174260), (4, 55087130), (5, 44069704), (7, 31478360), (8, 27543565), (10, 22034852), (14, 15739180), (20, 11017426), (28, 7869590), (35, 6295672), (40, 5508713), (56, 3934795), (70, 3147836), (140, 1573918), (280, 786959)]