28535000

素因数分解:

$2^3\times 5^4\times {\mathrm{13}}^1\times {\mathrm{439}}^1$

素因数の和:478

約数の個数: 80

約数和(自身を含む): 72164400

約数和(自身を除く): 43629400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 439, 500, 520, 625, 650, 878, 1000, 1250, 1300, 1625, 1756, 2195, 2500, 2600, 3250, 3512, 4390, 5000, 5707, 6500, 8125, 8780, 10975, 11414, 13000, 16250, 17560, 21950, 22828, 28535, 32500, 43900, 45656, 54875, 57070, 65000, 87800, 109750, 114140, 142675, 219500, 228280, 274375, 285350, 439000, 548750, 570700, 713375, 1097500, 1141400, 1426750, 2195000, 2853500, 3566875, 5707000, 7133750, 14267500, 28535000]

約数ペア:

[(1, 28535000), (2, 14267500), (4, 7133750), (5, 5707000), (8, 3566875), (10, 2853500), (13, 2195000), (20, 1426750), (25, 1141400), (26, 1097500), (40, 713375), (50, 570700), (52, 548750), (65, 439000), (100, 285350), (104, 274375), (125, 228280), (130, 219500), (200, 142675), (250, 114140), (260, 109750), (325, 87800), (439, 65000), (500, 57070), (520, 54875), (625, 45656), (650, 43900), (878, 32500), (1000, 28535), (1250, 22828), (1300, 21950), (1625, 17560), (1756, 16250), (2195, 13000), (2500, 11414), (2600, 10975), (3250, 8780), (3512, 8125), (4390, 6500), (5000, 5707)]