81477340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{581981}}^1$

素因数の和:581997

約数の個数: 24

約数和(自身を含む): 195545952

約数和(自身を除く): 114068612

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 581981, 1163962, 2327924, 2909905, 4073867, 5819810, 8147734, 11639620, 16295468, 20369335, 40738670, 81477340]

約数ペア:

[(1, 81477340), (2, 40738670), (4, 20369335), (5, 16295468), (7, 11639620), (10, 8147734), (14, 5819810), (20, 4073867), (28, 2909905), (35, 2327924), (70, 1163962), (140, 581981)]