81425000

素因数分解:

$2^3\times 5^5\times {\mathrm{3257}}^1$

素因数の和:3288

約数の個数: 48

約数和(自身を含む): 190886220

約数和(自身を除く): 109461220

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 3125, 3257, 5000, 6250, 6514, 12500, 13028, 16285, 25000, 26056, 32570, 65140, 81425, 130280, 162850, 325700, 407125, 651400, 814250, 1628500, 2035625, 3257000, 4071250, 8142500, 10178125, 16285000, 20356250, 40712500, 81425000]

約数ペア:

[(1, 81425000), (2, 40712500), (4, 20356250), (5, 16285000), (8, 10178125), (10, 8142500), (20, 4071250), (25, 3257000), (40, 2035625), (50, 1628500), (100, 814250), (125, 651400), (200, 407125), (250, 325700), (500, 162850), (625, 130280), (1000, 81425), (1250, 65140), (2500, 32570), (3125, 26056), (3257, 25000), (5000, 16285), (6250, 13028), (6514, 12500)]