2778020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19843}}^1$

素因数の和:19859

約数の個数: 24

約数和(自身を含む): 6667584

約数和(自身を除く): 3889564

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 19843, 39686, 79372, 99215, 138901, 198430, 277802, 396860, 555604, 694505, 1389010, 2778020]

約数ペア:

[(1, 2778020), (2, 1389010), (4, 694505), (5, 555604), (7, 396860), (10, 277802), (14, 198430), (20, 138901), (28, 99215), (35, 79372), (70, 39686), (140, 19843)]