21231378

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{167}}^1\times {\mathrm{1009}}^1$

素因数の和:1191

約数の個数: 48

約数和(自身を含む): 52940160

約数和(自身を除く): 31708782

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 167, 334, 501, 1002, 1009, 1169, 1503, 2018, 2338, 3006, 3027, 3507, 6054, 7014, 7063, 9081, 10521, 14126, 18162, 21042, 21189, 42378, 63567, 127134, 168503, 337006, 505509, 1011018, 1179521, 1516527, 2359042, 3033054, 3538563, 7077126, 10615689, 21231378]

約数ペア:

[(1, 21231378), (2, 10615689), (3, 7077126), (6, 3538563), (7, 3033054), (9, 2359042), (14, 1516527), (18, 1179521), (21, 1011018), (42, 505509), (63, 337006), (126, 168503), (167, 127134), (334, 63567), (501, 42378), (1002, 21189), (1009, 21042), (1169, 18162), (1503, 14126), (2018, 10521), (2338, 9081), (3006, 7063), (3027, 7014), (3507, 6054)]