21131784

素因数分解:

$2^3\times 3^2\times {\mathrm{127}}^1\times {\mathrm{2311}}^1$

素因数の和:2450

約数の個数: 48

約数和(自身を含む): 57707520

約数和(自身を除く): 36575736

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 127, 254, 381, 508, 762, 1016, 1143, 1524, 2286, 2311, 3048, 4572, 4622, 6933, 9144, 9244, 13866, 18488, 20799, 27732, 41598, 55464, 83196, 166392, 293497, 586994, 880491, 1173988, 1760982, 2347976, 2641473, 3521964, 5282946, 7043928, 10565892, 21131784]

約数ペア:

[(1, 21131784), (2, 10565892), (3, 7043928), (4, 5282946), (6, 3521964), (8, 2641473), (9, 2347976), (12, 1760982), (18, 1173988), (24, 880491), (36, 586994), (72, 293497), (127, 166392), (254, 83196), (381, 55464), (508, 41598), (762, 27732), (1016, 20799), (1143, 18488), (1524, 13866), (2286, 9244), (2311, 9144), (3048, 6933), (4572, 4622)]