268405960

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{61561}}^1$

素因数の和:61681

約数の個数: 32

約数和(自身を含む): 609463800

約数和(自身を除く): 341057840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 61561, 123122, 246244, 307805, 492488, 615610, 1231220, 2462440, 6710149, 13420298, 26840596, 33550745, 53681192, 67101490, 134202980, 268405960]

約数ペア:

[(1, 268405960), (2, 134202980), (4, 67101490), (5, 53681192), (8, 33550745), (10, 26840596), (20, 13420298), (40, 6710149), (109, 2462440), (218, 1231220), (436, 615610), (545, 492488), (872, 307805), (1090, 246244), (2180, 123122), (4360, 61561)]