21808278

素因数分解:

$2^1\times 3^5\times {\mathrm{23}}^1\times {\mathrm{1951}}^1$

素因数の和:1991

約数の個数: 48

約数和(自身を含む): 51158016

約数和(自身を除く): 29349738

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 46, 54, 69, 81, 138, 162, 207, 243, 414, 486, 621, 1242, 1863, 1951, 3726, 3902, 5589, 5853, 11178, 11706, 17559, 35118, 44873, 52677, 89746, 105354, 134619, 158031, 269238, 316062, 403857, 474093, 807714, 948186, 1211571, 2423142, 3634713, 7269426, 10904139, 21808278]

約数ペア:

[(1, 21808278), (2, 10904139), (3, 7269426), (6, 3634713), (9, 2423142), (18, 1211571), (23, 948186), (27, 807714), (46, 474093), (54, 403857), (69, 316062), (81, 269238), (138, 158031), (162, 134619), (207, 105354), (243, 89746), (414, 52677), (486, 44873), (621, 35118), (1242, 17559), (1863, 11706), (1951, 11178), (3726, 5853), (3902, 5589)]