221151728

素因数分解:

$2^4\times 7^1\times {\mathrm{1974569}}^1$

素因数の和:1974584

約数の個数: 20

約数和(自身を含む): 489693360

約数和(自身を除く): 268541632

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 1974569, 3949138, 7898276, 13821983, 15796552, 27643966, 31593104, 55287932, 110575864, 221151728]

約数ペア:

[(1, 221151728), (2, 110575864), (4, 55287932), (7, 31593104), (8, 27643966), (14, 15796552), (16, 13821983), (28, 7898276), (56, 3949138), (112, 1974569)]