20544865

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 28512000

約数和(自身を除く): 7967135

約数列:

[1, 5, 11, 23, 55, 109, 115, 149, 253, 545, 745, 1199, 1265, 1639, 2507, 3427, 5995, 8195, 12535, 16241, 17135, 27577, 37697, 81205, 137885, 178651, 188485, 373543, 893255, 1867715, 4108973, 20544865]

約数ペア:

[(1, 20544865), (5, 4108973), (11, 1867715), (23, 893255), (55, 373543), (109, 188485), (115, 178651), (149, 137885), (253, 81205), (545, 37697), (745, 27577), (1199, 17135), (1265, 16241), (1639, 12535), (2507, 8195), (3427, 5995)]