20725000

素因数分解:

$2^3\times 5^5\times {\mathrm{829}}^1$

素因数の和:860

約数の個数: 48

約数和(自身を含む): 48629700

約数和(自身を除く): 27904700

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 829, 1000, 1250, 1658, 2500, 3125, 3316, 4145, 5000, 6250, 6632, 8290, 12500, 16580, 20725, 25000, 33160, 41450, 82900, 103625, 165800, 207250, 414500, 518125, 829000, 1036250, 2072500, 2590625, 4145000, 5181250, 10362500, 20725000]

約数ペア:

[(1, 20725000), (2, 10362500), (4, 5181250), (5, 4145000), (8, 2590625), (10, 2072500), (20, 1036250), (25, 829000), (40, 518125), (50, 414500), (100, 207250), (125, 165800), (200, 103625), (250, 82900), (500, 41450), (625, 33160), (829, 25000), (1000, 20725), (1250, 16580), (1658, 12500), (2500, 8290), (3125, 6632), (3316, 6250), (4145, 5000)]