20250020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1327}}^1$

素因数の和:1452

約数の個数: 48

約数和(自身を含む): 49082880

約数和(自身を除く): 28832860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 763, 1090, 1327, 1526, 2180, 2654, 3052, 3815, 5308, 6635, 7630, 9289, 13270, 15260, 18578, 26540, 37156, 46445, 92890, 144643, 185780, 289286, 578572, 723215, 1012501, 1446430, 2025002, 2892860, 4050004, 5062505, 10125010, 20250020]

約数ペア:

[(1, 20250020), (2, 10125010), (4, 5062505), (5, 4050004), (7, 2892860), (10, 2025002), (14, 1446430), (20, 1012501), (28, 723215), (35, 578572), (70, 289286), (109, 185780), (140, 144643), (218, 92890), (436, 46445), (545, 37156), (763, 26540), (1090, 18578), (1327, 15260), (1526, 13270), (2180, 9289), (2654, 7630), (3052, 6635), (3815, 5308)]