20019798

素因数分解:

$2^1\times 3^7\times {\mathrm{23}}^1\times {\mathrm{199}}^1$

素因数の和:245

約数の個数: 64

約数和(自身を含む): 47232000

約数和(自身を除く): 27212202

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 46, 54, 69, 81, 138, 162, 199, 207, 243, 398, 414, 486, 597, 621, 729, 1194, 1242, 1458, 1791, 1863, 2187, 3582, 3726, 4374, 4577, 5373, 5589, 9154, 10746, 11178, 13731, 16119, 16767, 27462, 32238, 33534, 41193, 48357, 50301, 82386, 96714, 100602, 123579, 145071, 247158, 290142, 370737, 435213, 741474, 870426, 1112211, 2224422, 3336633, 6673266, 10009899, 20019798]

約数ペア:

[(1, 20019798), (2, 10009899), (3, 6673266), (6, 3336633), (9, 2224422), (18, 1112211), (23, 870426), (27, 741474), (46, 435213), (54, 370737), (69, 290142), (81, 247158), (138, 145071), (162, 123579), (199, 100602), (207, 96714), (243, 82386), (398, 50301), (414, 48357), (486, 41193), (597, 33534), (621, 32238), (729, 27462), (1194, 16767), (1242, 16119), (1458, 13731), (1791, 11178), (1863, 10746), (2187, 9154), (3582, 5589), (3726, 5373), (4374, 4577)]