21221255

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{241}}^1\times {\mathrm{1601}}^1$

素因数の和:1858

約数の個数: 16

約数和(自身を含む): 27913248

約数和(自身を除く): 6691993

約数列:

[1, 5, 11, 55, 241, 1205, 1601, 2651, 8005, 13255, 17611, 88055, 385841, 1929205, 4244251, 21221255]

約数ペア:

[(1, 21221255), (5, 4244251), (11, 1929205), (55, 385841), (241, 88055), (1205, 17611), (1601, 13255), (2651, 8005)]