18078520

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3299}}^1$

素因数の和:3447

約数の個数: 32

約数和(自身を含む): 40986000

約数和(自身を除く): 22907480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 3299, 5480, 6598, 13196, 16495, 26392, 32990, 65980, 131960, 451963, 903926, 1807852, 2259815, 3615704, 4519630, 9039260, 18078520]

約数ペア:

[(1, 18078520), (2, 9039260), (4, 4519630), (5, 3615704), (8, 2259815), (10, 1807852), (20, 903926), (40, 451963), (137, 131960), (274, 65980), (548, 32990), (685, 26392), (1096, 16495), (1370, 13196), (2740, 6598), (3299, 5480)]