40062500

素因数分解:

$2^2\times 5^6\times {\mathrm{641}}^1$

素因数の和:675

約数の個数: 42

約数和(自身を含む): 87772314

約数和(自身を除く): 47709814

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, 15625, 16025, 31250, 32050, 62500, 64100, 80125, 160250, 320500, 400625, 801250, 1602500, 2003125, 4006250, 8012500, 10015625, 20031250, 40062500]

約数ペア:

[(1, 40062500), (2, 20031250), (4, 10015625), (5, 8012500), (10, 4006250), (20, 2003125), (25, 1602500), (50, 801250), (100, 400625), (125, 320500), (250, 160250), (500, 80125), (625, 64100), (641, 62500), (1250, 32050), (1282, 31250), (2500, 16025), (2564, 15625), (3125, 12820), (3205, 12500), (6250, 6410)]