4210000

素因数分解:

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

素因数の和:449

約数の個数: 50

約数和(自身を含む): 10217042

約数和(自身を除く): 6007042

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 421, 500, 625, 842, 1000, 1250, 1684, 2000, 2105, 2500, 3368, 4210, 5000, 6736, 8420, 10000, 10525, 16840, 21050, 33680, 42100, 52625, 84200, 105250, 168400, 210500, 263125, 421000, 526250, 842000, 1052500, 2105000, 4210000]

約数ペア:

[(1, 4210000), (2, 2105000), (4, 1052500), (5, 842000), (8, 526250), (10, 421000), (16, 263125), (20, 210500), (25, 168400), (40, 105250), (50, 84200), (80, 52625), (100, 42100), (125, 33680), (200, 21050), (250, 16840), (400, 10525), (421, 10000), (500, 8420), (625, 6736), (842, 5000), (1000, 4210), (1250, 3368), (1684, 2500), (2000, 2105)]