1640541681

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{1065979}}^1$

素因数の和:1066010

約数の個数: 20

約数和(自身を含む): 2579671600

約数和(自身を除く): 939129919

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 1065979, 3197937, 9593811, 20253601, 28781433, 60760803, 86344299, 182282409, 546847227, 1640541681]

約数ペア:

[(1, 1640541681), (3, 546847227), (9, 182282409), (19, 86344299), (27, 60760803), (57, 28781433), (81, 20253601), (171, 9593811), (513, 3197937), (1539, 1065979)]