21106638

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1319}}^1$

素因数の和:1461

約数の個数: 48

約数和(自身を含む): 52715520

約数和(自身を除く): 31608882

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 127, 254, 381, 762, 889, 1143, 1319, 1778, 2286, 2638, 2667, 3957, 5334, 7914, 8001, 9233, 11871, 16002, 18466, 23742, 27699, 55398, 83097, 166194, 167513, 335026, 502539, 1005078, 1172591, 1507617, 2345182, 3015234, 3517773, 7035546, 10553319, 21106638]

約数ペア:

[(1, 21106638), (2, 10553319), (3, 7035546), (6, 3517773), (7, 3015234), (9, 2345182), (14, 1507617), (18, 1172591), (21, 1005078), (42, 502539), (63, 335026), (126, 167513), (127, 166194), (254, 83097), (381, 55398), (762, 27699), (889, 23742), (1143, 18466), (1319, 16002), (1778, 11871), (2286, 9233), (2638, 8001), (2667, 7914), (3957, 5334)]