51271443

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 81768960

約数和(自身を除く): 30497517

約数列:

[1, 3, 9, 19, 41, 57, 71, 103, 123, 171, 213, 309, 369, 639, 779, 927, 1349, 1957, 2337, 2911, 4047, 4223, 5871, 7011, 7313, 8733, 12141, 12669, 17613, 21939, 26199, 38007, 55309, 65817, 80237, 138947, 165927, 240711, 299833, 416841, 497781, 722133, 899499, 1250523, 2698497, 5696827, 17090481, 51271443]

約数ペア:

[(1, 51271443), (3, 17090481), (9, 5696827), (19, 2698497), (41, 1250523), (57, 899499), (71, 722133), (103, 497781), (123, 416841), (171, 299833), (213, 240711), (309, 165927), (369, 138947), (639, 80237), (779, 65817), (927, 55309), (1349, 38007), (1957, 26199), (2337, 21939), (2911, 17613), (4047, 12669), (4223, 12141), (5871, 8733), (7011, 7313)]