21023500

素因数分解:

$2^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{2213}}^1$

素因数の和:2251

約数の個数: 48

約数和(自身を含む): 48353760

約数和(自身を除く): 27330260

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 125, 190, 250, 380, 475, 500, 950, 1900, 2213, 2375, 4426, 4750, 8852, 9500, 11065, 22130, 42047, 44260, 55325, 84094, 110650, 168188, 210235, 221300, 276625, 420470, 553250, 840940, 1051175, 1106500, 2102350, 4204700, 5255875, 10511750, 21023500]

約数ペア:

[(1, 21023500), (2, 10511750), (4, 5255875), (5, 4204700), (10, 2102350), (19, 1106500), (20, 1051175), (25, 840940), (38, 553250), (50, 420470), (76, 276625), (95, 221300), (100, 210235), (125, 168188), (190, 110650), (250, 84094), (380, 55325), (475, 44260), (500, 42047), (950, 22130), (1900, 11065), (2213, 9500), (2375, 8852), (4426, 4750)]