128520777

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{79481}}^1$

素因数の和:79509

約数の個数: 24

約数和(自身を含む): 217462752

約数和(自身を除く): 88941975

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 79481, 238443, 556367, 874291, 1669101, 2622873, 3894569, 6120037, 11683707, 18360111, 42840259, 128520777]

約数ペア:

[(1, 128520777), (3, 42840259), (7, 18360111), (11, 11683707), (21, 6120037), (33, 3894569), (49, 2622873), (77, 1669101), (147, 874291), (231, 556367), (539, 238443), (1617, 79481)]