257440984

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{641}}^1\times {\mathrm{823}}^1$

素因数の和:1531

約数の個数: 32

約数和(自身を含む): 491977440

約数和(自身を除く): 234536456

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 641, 823, 1282, 1646, 2564, 3292, 5128, 6584, 39101, 50203, 78202, 100406, 156404, 200812, 312808, 401624, 527543, 1055086, 2110172, 4220344, 32180123, 64360246, 128720492, 257440984]

約数ペア:

[(1, 257440984), (2, 128720492), (4, 64360246), (8, 32180123), (61, 4220344), (122, 2110172), (244, 1055086), (488, 527543), (641, 401624), (823, 312808), (1282, 200812), (1646, 156404), (2564, 100406), (3292, 78202), (5128, 50203), (6584, 39101)]