1810000

素因数分解:

$2^4\times 5^4\times {\mathrm{181}}^1$

素因数の和:209

約数の個数: 50

約数和(自身を含む): 4406402

約数和(自身を除く): 2596402

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 181, 200, 250, 362, 400, 500, 625, 724, 905, 1000, 1250, 1448, 1810, 2000, 2500, 2896, 3620, 4525, 5000, 7240, 9050, 10000, 14480, 18100, 22625, 36200, 45250, 72400, 90500, 113125, 181000, 226250, 362000, 452500, 905000, 1810000]

約数ペア:

[(1, 1810000), (2, 905000), (4, 452500), (5, 362000), (8, 226250), (10, 181000), (16, 113125), (20, 90500), (25, 72400), (40, 45250), (50, 36200), (80, 22625), (100, 18100), (125, 14480), (181, 10000), (200, 9050), (250, 7240), (362, 5000), (400, 4525), (500, 3620), (625, 2896), (724, 2500), (905, 2000), (1000, 1810), (1250, 1448)]