8012500

素因数分解:

$2^2\times 5^5\times {\mathrm{641}}^1$

素因数の和:670

約数の個数: 36

約数和(自身を含む): 17553564

約数和(自身を除く): 9541064

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 641, 1250, 1282, 2500, 2564, 3125, 3205, 6250, 6410, 12500, 12820, 16025, 32050, 64100, 80125, 160250, 320500, 400625, 801250, 1602500, 2003125, 4006250, 8012500]

約数ペア:

[(1, 8012500), (2, 4006250), (4, 2003125), (5, 1602500), (10, 801250), (20, 400625), (25, 320500), (50, 160250), (100, 80125), (125, 64100), (250, 32050), (500, 16025), (625, 12820), (641, 12500), (1250, 6410), (1282, 6250), (2500, 3205), (2564, 3125)]