21213216

素因数分解:

$2^5\times 3^2\times {\mathrm{73}}^1\times {\mathrm{1009}}^1$

素因数の和:1098

約数の個数: 72

約数和(自身を含む): 61212060

約数和(自身を除く): 39998844

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 73, 96, 144, 146, 219, 288, 292, 438, 584, 657, 876, 1009, 1168, 1314, 1752, 2018, 2336, 2628, 3027, 3504, 4036, 5256, 6054, 7008, 8072, 9081, 10512, 12108, 16144, 18162, 21024, 24216, 32288, 36324, 48432, 72648, 73657, 96864, 145296, 147314, 220971, 290592, 294628, 441942, 589256, 662913, 883884, 1178512, 1325826, 1767768, 2357024, 2651652, 3535536, 5303304, 7071072, 10606608, 21213216]

約数ペア:

[(1, 21213216), (2, 10606608), (3, 7071072), (4, 5303304), (6, 3535536), (8, 2651652), (9, 2357024), (12, 1767768), (16, 1325826), (18, 1178512), (24, 883884), (32, 662913), (36, 589256), (48, 441942), (72, 294628), (73, 290592), (96, 220971), (144, 147314), (146, 145296), (219, 96864), (288, 73657), (292, 72648), (438, 48432), (584, 36324), (657, 32288), (876, 24216), (1009, 21024), (1168, 18162), (1314, 16144), (1752, 12108), (2018, 10512), (2336, 9081), (2628, 8072), (3027, 7008), (3504, 6054), (4036, 5256)]