2105000

素因数分解:

$2^3\times 5^4\times {\mathrm{421}}^1$

素因数の和:447

約数の個数: 40

約数和(自身を含む): 4943730

約数和(自身を除く): 2838730

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 421, 500, 625, 842, 1000, 1250, 1684, 2105, 2500, 3368, 4210, 5000, 8420, 10525, 16840, 21050, 42100, 52625, 84200, 105250, 210500, 263125, 421000, 526250, 1052500, 2105000]

約数ペア:

[(1, 2105000), (2, 1052500), (4, 526250), (5, 421000), (8, 263125), (10, 210500), (20, 105250), (25, 84200), (40, 52625), (50, 42100), (100, 21050), (125, 16840), (200, 10525), (250, 8420), (421, 5000), (500, 4210), (625, 3368), (842, 2500), (1000, 2105), (1250, 1684)]