21057200

素因数分解:

$2^4\times 5^2\times {\mathrm{61}}^1\times {\mathrm{863}}^1$

素因数の和:942

約数の個数: 60

約数和(自身を含む): 51478848

約数和(自身を除く): 30421648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 61, 80, 100, 122, 200, 244, 305, 400, 488, 610, 863, 976, 1220, 1525, 1726, 2440, 3050, 3452, 4315, 4880, 6100, 6904, 8630, 12200, 13808, 17260, 21575, 24400, 34520, 43150, 52643, 69040, 86300, 105286, 172600, 210572, 263215, 345200, 421144, 526430, 842288, 1052860, 1316075, 2105720, 2632150, 4211440, 5264300, 10528600, 21057200]

約数ペア:

[(1, 21057200), (2, 10528600), (4, 5264300), (5, 4211440), (8, 2632150), (10, 2105720), (16, 1316075), (20, 1052860), (25, 842288), (40, 526430), (50, 421144), (61, 345200), (80, 263215), (100, 210572), (122, 172600), (200, 105286), (244, 86300), (305, 69040), (400, 52643), (488, 43150), (610, 34520), (863, 24400), (976, 21575), (1220, 17260), (1525, 13808), (1726, 12200), (2440, 8630), (3050, 6904), (3452, 6100), (4315, 4880)]