128195000

素因数分解:

$2^3\times 5^4\times {\mathrm{25639}}^1$

素因数の和:25665

約数の個数: 40

約数和(自身を含む): 300372600

約数和(自身を除く): 172177600

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 5000, 25639, 51278, 102556, 128195, 205112, 256390, 512780, 640975, 1025560, 1281950, 2563900, 3204875, 5127800, 6409750, 12819500, 16024375, 25639000, 32048750, 64097500, 128195000]

約数ペア:

[(1, 128195000), (2, 64097500), (4, 32048750), (5, 25639000), (8, 16024375), (10, 12819500), (20, 6409750), (25, 5127800), (40, 3204875), (50, 2563900), (100, 1281950), (125, 1025560), (200, 640975), (250, 512780), (500, 256390), (625, 205112), (1000, 128195), (1250, 102556), (2500, 51278), (5000, 25639)]