21275000

素因数分解:

$2^3\times 5^5\times {\mathrm{23}}^1\times {\mathrm{37}}^1$

素因数の和:91

約数の個数: 96

約数和(自身を含む): 53434080

約数和(自身を除く): 32159080

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 37, 40, 46, 50, 74, 92, 100, 115, 125, 148, 184, 185, 200, 230, 250, 296, 370, 460, 500, 575, 625, 740, 851, 920, 925, 1000, 1150, 1250, 1480, 1702, 1850, 2300, 2500, 2875, 3125, 3404, 3700, 4255, 4600, 4625, 5000, 5750, 6250, 6808, 7400, 8510, 9250, 11500, 12500, 14375, 17020, 18500, 21275, 23000, 23125, 25000, 28750, 34040, 37000, 42550, 46250, 57500, 71875, 85100, 92500, 106375, 115000, 115625, 143750, 170200, 185000, 212750, 231250, 287500, 425500, 462500, 531875, 575000, 851000, 925000, 1063750, 2127500, 2659375, 4255000, 5318750, 10637500, 21275000]

約数ペア:

[(1, 21275000), (2, 10637500), (4, 5318750), (5, 4255000), (8, 2659375), (10, 2127500), (20, 1063750), (23, 925000), (25, 851000), (37, 575000), (40, 531875), (46, 462500), (50, 425500), (74, 287500), (92, 231250), (100, 212750), (115, 185000), (125, 170200), (148, 143750), (184, 115625), (185, 115000), (200, 106375), (230, 92500), (250, 85100), (296, 71875), (370, 57500), (460, 46250), (500, 42550), (575, 37000), (625, 34040), (740, 28750), (851, 25000), (920, 23125), (925, 23000), (1000, 21275), (1150, 18500), (1250, 17020), (1480, 14375), (1702, 12500), (1850, 11500), (2300, 9250), (2500, 8510), (2875, 7400), (3125, 6808), (3404, 6250), (3700, 5750), (4255, 5000), (4600, 4625)]