21213008

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{467}}^1$

素因数の和:659

約数の個数: 40

約数和(自身を含む): 43872192

約数和(自身を除く): 22659184

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 167, 272, 334, 467, 668, 934, 1336, 1868, 2672, 2839, 3736, 5678, 7472, 7939, 11356, 15878, 22712, 31756, 45424, 63512, 77989, 127024, 155978, 311956, 623912, 1247824, 1325813, 2651626, 5303252, 10606504, 21213008]

約数ペア:

[(1, 21213008), (2, 10606504), (4, 5303252), (8, 2651626), (16, 1325813), (17, 1247824), (34, 623912), (68, 311956), (136, 155978), (167, 127024), (272, 77989), (334, 63512), (467, 45424), (668, 31756), (934, 22712), (1336, 15878), (1868, 11356), (2672, 7939), (2839, 7472), (3736, 5678)]