20892900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{9949}}^1$

素因数の和:9973

約数の個数: 72

約数和(自身を含む): 69092800

約数和(自身を除く): 48199900

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 9949, 19898, 29847, 39796, 49745, 59694, 69643, 99490, 119388, 139286, 149235, 198980, 208929, 248725, 278572, 298470, 348215, 417858, 497450, 596940, 696430, 746175, 835716, 994900, 1044645, 1392860, 1492350, 1741075, 2089290, 2984700, 3482150, 4178580, 5223225, 6964300, 10446450, 20892900]

約数ペア:

[(1, 20892900), (2, 10446450), (3, 6964300), (4, 5223225), (5, 4178580), (6, 3482150), (7, 2984700), (10, 2089290), (12, 1741075), (14, 1492350), (15, 1392860), (20, 1044645), (21, 994900), (25, 835716), (28, 746175), (30, 696430), (35, 596940), (42, 497450), (50, 417858), (60, 348215), (70, 298470), (75, 278572), (84, 248725), (100, 208929), (105, 198980), (140, 149235), (150, 139286), (175, 119388), (210, 99490), (300, 69643), (350, 59694), (420, 49745), (525, 39796), (700, 29847), (1050, 19898), (2100, 9949)]