21237500

素因数分解:

$2^2\times 5^5\times {\mathrm{1699}}^1$

素因数の和:1728

約数の個数: 36

約数和(自身を含む): 46481400

約数和(自身を除く): 25243900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 625, 1250, 1699, 2500, 3125, 3398, 6250, 6796, 8495, 12500, 16990, 33980, 42475, 84950, 169900, 212375, 424750, 849500, 1061875, 2123750, 4247500, 5309375, 10618750, 21237500]

約数ペア:

[(1, 21237500), (2, 10618750), (4, 5309375), (5, 4247500), (10, 2123750), (20, 1061875), (25, 849500), (50, 424750), (100, 212375), (125, 169900), (250, 84950), (500, 42475), (625, 33980), (1250, 16990), (1699, 12500), (2500, 8495), (3125, 6796), (3398, 6250)]