20545270

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1523}}^1$

素因数の和:1620

約数の個数: 32

約数和(自身を含む): 39502080

約数和(自身を除く): 18956810

約数列:

[1, 2, 5, 10, 19, 38, 71, 95, 142, 190, 355, 710, 1349, 1523, 2698, 3046, 6745, 7615, 13490, 15230, 28937, 57874, 108133, 144685, 216266, 289370, 540665, 1081330, 2054527, 4109054, 10272635, 20545270]

約数ペア:

[(1, 20545270), (2, 10272635), (5, 4109054), (10, 2054527), (19, 1081330), (38, 540665), (71, 289370), (95, 216266), (142, 144685), (190, 108133), (355, 57874), (710, 28937), (1349, 15230), (1523, 13490), (2698, 7615), (3046, 6745)]