21434500

素因数分解:

$2^2\times 5^3\times {\mathrm{163}}^1\times {\mathrm{263}}^1$

素因数の和:445

約数の個数: 48

約数和(自身を含む): 47279232

約数和(自身を除く): 25844732

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 163, 250, 263, 326, 500, 526, 652, 815, 1052, 1315, 1630, 2630, 3260, 4075, 5260, 6575, 8150, 13150, 16300, 20375, 26300, 32875, 40750, 42869, 65750, 81500, 85738, 131500, 171476, 214345, 428690, 857380, 1071725, 2143450, 4286900, 5358625, 10717250, 21434500]

約数ペア:

[(1, 21434500), (2, 10717250), (4, 5358625), (5, 4286900), (10, 2143450), (20, 1071725), (25, 857380), (50, 428690), (100, 214345), (125, 171476), (163, 131500), (250, 85738), (263, 81500), (326, 65750), (500, 42869), (526, 40750), (652, 32875), (815, 26300), (1052, 20375), (1315, 16300), (1630, 13150), (2630, 8150), (3260, 6575), (4075, 5260)]