21004313

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{1361}}^1$

素因数の和:1456

約数の個数: 16

約数和(自身を含む): 24319872

約数和(自身を除く): 3315559

約数列:

[1, 11, 23, 61, 253, 671, 1361, 1403, 14971, 15433, 31303, 83021, 344333, 913231, 1909483, 21004313]

約数ペア:

[(1, 21004313), (11, 1909483), (23, 913231), (61, 344333), (253, 83021), (671, 31303), (1361, 15433), (1403, 14971)]