21890800

素因数分解:

$2^4\times 5^2\times {\mathrm{54727}}^1$

素因数の和:54745

約数の個数: 30

約数和(自身を含む): 52593608

約数和(自身を除く): 30702808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 54727, 109454, 218908, 273635, 437816, 547270, 875632, 1094540, 1368175, 2189080, 2736350, 4378160, 5472700, 10945400, 21890800]

約数ペア:

[(1, 21890800), (2, 10945400), (4, 5472700), (5, 4378160), (8, 2736350), (10, 2189080), (16, 1368175), (20, 1094540), (25, 875632), (40, 547270), (50, 437816), (80, 273635), (100, 218908), (200, 109454), (400, 54727)]