218139080

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{21727}}^1$

素因数の和:21989

約数の個数: 32

約数和(自身を含む): 492791040

約数和(自身を除く): 274651960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 10040, 21727, 43454, 86908, 108635, 173816, 217270, 434540, 869080, 5453477, 10906954, 21813908, 27267385, 43627816, 54534770, 109069540, 218139080]

約数ペア:

[(1, 218139080), (2, 109069540), (4, 54534770), (5, 43627816), (8, 27267385), (10, 21813908), (20, 10906954), (40, 5453477), (251, 869080), (502, 434540), (1004, 217270), (1255, 173816), (2008, 108635), (2510, 86908), (5020, 43454), (10040, 21727)]