21000658196

素因数分解:

$2^2\times 7^1\times {\mathrm{750023507}}^1$

素因数の和:750023518

約数の個数: 12

約数和(自身を含む): 42001316448

約数和(自身を除く): 21000658252

約数列:

[1, 2, 4, 7, 14, 28, 750023507, 1500047014, 3000094028, 5250164549, 10500329098, 21000658196]

約数ペア:

[(1, 21000658196), (2, 10500329098), (4, 5250164549), (7, 3000094028), (14, 1500047014), (28, 750023507)]