128781608

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{223}}^1\times {\mathrm{1951}}^1$

素因数の和:2217

約数の個数: 32

約数和(自身を含む): 249231360

約数和(自身を除く): 120449752

約数列:

[1, 2, 4, 8, 37, 74, 148, 223, 296, 446, 892, 1784, 1951, 3902, 7804, 8251, 15608, 16502, 33004, 66008, 72187, 144374, 288748, 435073, 577496, 870146, 1740292, 3480584, 16097701, 32195402, 64390804, 128781608]

約数ペア:

[(1, 128781608), (2, 64390804), (4, 32195402), (8, 16097701), (37, 3480584), (74, 1740292), (148, 870146), (223, 577496), (296, 435073), (446, 288748), (892, 144374), (1784, 72187), (1951, 66008), (3902, 33004), (7804, 16502), (8251, 15608)]