1285757721

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{1523}}^1\times {\mathrm{4937}}^1$

素因数の和:6485

約数の個数: 24

約数和(自身を含む): 1956633120

約数和(自身を除く): 670875399

約数列:

[1, 3, 9, 19, 57, 171, 1523, 4569, 4937, 13707, 14811, 28937, 44433, 86811, 93803, 260433, 281409, 844227, 7519051, 22557153, 67671459, 142861969, 428585907, 1285757721]

約数ペア:

[(1, 1285757721), (3, 428585907), (9, 142861969), (19, 67671459), (57, 22557153), (171, 7519051), (1523, 844227), (4569, 281409), (4937, 260433), (13707, 93803), (14811, 86811), (28937, 44433)]