8378500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{1289}}^1$

素因数の和:1321

約数の個数: 48

約数和(自身を含む): 19721520

約数和(自身を除く): 11343020

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1289, 1300, 1625, 2578, 3250, 5156, 6445, 6500, 12890, 16757, 25780, 32225, 33514, 64450, 67028, 83785, 128900, 161125, 167570, 322250, 335140, 418925, 644500, 837850, 1675700, 2094625, 4189250, 8378500]

約数ペア:

[(1, 8378500), (2, 4189250), (4, 2094625), (5, 1675700), (10, 837850), (13, 644500), (20, 418925), (25, 335140), (26, 322250), (50, 167570), (52, 161125), (65, 128900), (100, 83785), (125, 67028), (130, 64450), (250, 33514), (260, 32225), (325, 25780), (500, 16757), (650, 12890), (1289, 6500), (1300, 6445), (1625, 5156), (2578, 3250)]