20216985

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{499}}^1$

素因数の和:617

約数の個数: 32

約数和(自身を含む): 33744000

約数和(自身を除く): 13527015

約数列:

[1, 3, 5, 15, 37, 73, 111, 185, 219, 365, 499, 555, 1095, 1497, 2495, 2701, 7485, 8103, 13505, 18463, 36427, 40515, 55389, 92315, 109281, 182135, 276945, 546405, 1347799, 4043397, 6738995, 20216985]

約数ペア:

[(1, 20216985), (3, 6738995), (5, 4043397), (15, 1347799), (37, 546405), (73, 276945), (111, 182135), (185, 109281), (219, 92315), (365, 55389), (499, 40515), (555, 36427), (1095, 18463), (1497, 13505), (2495, 8103), (2701, 7485)]