21071600

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{4789}}^1$

素因数の和:4818

約数の個数: 60

約数和(自身を含む): 55238280

約数和(自身を除く): 34166680

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 550, 880, 1100, 2200, 4400, 4789, 9578, 19156, 23945, 38312, 47890, 52679, 76624, 95780, 105358, 119725, 191560, 210716, 239450, 263395, 383120, 421432, 478900, 526790, 842864, 957800, 1053580, 1316975, 1915600, 2107160, 2633950, 4214320, 5267900, 10535800, 21071600]

約数ペア:

[(1, 21071600), (2, 10535800), (4, 5267900), (5, 4214320), (8, 2633950), (10, 2107160), (11, 1915600), (16, 1316975), (20, 1053580), (22, 957800), (25, 842864), (40, 526790), (44, 478900), (50, 421432), (55, 383120), (80, 263395), (88, 239450), (100, 210716), (110, 191560), (176, 119725), (200, 105358), (220, 95780), (275, 76624), (400, 52679), (440, 47890), (550, 38312), (880, 23945), (1100, 19156), (2200, 9578), (4400, 4789)]