987500

素因数分解:

$2^2\times 5^5\times {\mathrm{79}}^1$

素因数の和:108

約数の個数: 36

約数和(自身を含む): 2187360

約数和(自身を除く): 1199860

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 125, 158, 250, 316, 395, 500, 625, 790, 1250, 1580, 1975, 2500, 3125, 3950, 6250, 7900, 9875, 12500, 19750, 39500, 49375, 98750, 197500, 246875, 493750, 987500]

約数ペア:

[(1, 987500), (2, 493750), (4, 246875), (5, 197500), (10, 98750), (20, 49375), (25, 39500), (50, 19750), (79, 12500), (100, 9875), (125, 7900), (158, 6250), (250, 3950), (316, 3125), (395, 2500), (500, 1975), (625, 1580), (790, 1250)]