18018800

素因数分解:

$2^4\times 5^2\times {\mathrm{107}}^1\times {\mathrm{421}}^1$

素因数の和:546

約数の個数: 60

約数和(自身を含む): 43798536

約数和(自身を除く): 25779736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 107, 200, 214, 400, 421, 428, 535, 842, 856, 1070, 1684, 1712, 2105, 2140, 2675, 3368, 4210, 4280, 5350, 6736, 8420, 8560, 10525, 10700, 16840, 21050, 21400, 33680, 42100, 42800, 45047, 84200, 90094, 168400, 180188, 225235, 360376, 450470, 720752, 900940, 1126175, 1801880, 2252350, 3603760, 4504700, 9009400, 18018800]

約数ペア:

[(1, 18018800), (2, 9009400), (4, 4504700), (5, 3603760), (8, 2252350), (10, 1801880), (16, 1126175), (20, 900940), (25, 720752), (40, 450470), (50, 360376), (80, 225235), (100, 180188), (107, 168400), (200, 90094), (214, 84200), (400, 45047), (421, 42800), (428, 42100), (535, 33680), (842, 21400), (856, 21050), (1070, 16840), (1684, 10700), (1712, 10525), (2105, 8560), (2140, 8420), (2675, 6736), (3368, 5350), (4210, 4280)]