21147400

素因数分解:

$2^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{2459}}^1$

素因数の和:2518

約数の個数: 48

約数和(自身を含む): 50331600

約数和(自身を除く): 29184200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 172, 200, 215, 344, 430, 860, 1075, 1720, 2150, 2459, 4300, 4918, 8600, 9836, 12295, 19672, 24590, 49180, 61475, 98360, 105737, 122950, 211474, 245900, 422948, 491800, 528685, 845896, 1057370, 2114740, 2643425, 4229480, 5286850, 10573700, 21147400]

約数ペア:

[(1, 21147400), (2, 10573700), (4, 5286850), (5, 4229480), (8, 2643425), (10, 2114740), (20, 1057370), (25, 845896), (40, 528685), (43, 491800), (50, 422948), (86, 245900), (100, 211474), (172, 122950), (200, 105737), (215, 98360), (344, 61475), (430, 49180), (860, 24590), (1075, 19672), (1720, 12295), (2150, 9836), (2459, 8600), (4300, 4918)]