19415000

素因数分解:

$2^3\times 5^4\times {\mathrm{11}}^1\times {\mathrm{353}}^1$

素因数の和:390

約数の個数: 80

約数和(自身を含む): 49765320

約数和(自身を除く): 30350320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 125, 200, 220, 250, 275, 353, 440, 500, 550, 625, 706, 1000, 1100, 1250, 1375, 1412, 1765, 2200, 2500, 2750, 2824, 3530, 3883, 5000, 5500, 6875, 7060, 7766, 8825, 11000, 13750, 14120, 15532, 17650, 19415, 27500, 31064, 35300, 38830, 44125, 55000, 70600, 77660, 88250, 97075, 155320, 176500, 194150, 220625, 353000, 388300, 441250, 485375, 776600, 882500, 970750, 1765000, 1941500, 2426875, 3883000, 4853750, 9707500, 19415000]

約数ペア:

[(1, 19415000), (2, 9707500), (4, 4853750), (5, 3883000), (8, 2426875), (10, 1941500), (11, 1765000), (20, 970750), (22, 882500), (25, 776600), (40, 485375), (44, 441250), (50, 388300), (55, 353000), (88, 220625), (100, 194150), (110, 176500), (125, 155320), (200, 97075), (220, 88250), (250, 77660), (275, 70600), (353, 55000), (440, 44125), (500, 38830), (550, 35300), (625, 31064), (706, 27500), (1000, 19415), (1100, 17650), (1250, 15532), (1375, 14120), (1412, 13750), (1765, 11000), (2200, 8825), (2500, 7766), (2750, 7060), (2824, 6875), (3530, 5500), (3883, 5000)]